Regression in 5.0.0.x when using a regular expression

[ezzadeen]

Prerequisites

• [X] I have searched the existing issues
• [X] I understand that providing a SSCCE example is tremendously useful to the maintainers.
• [X] I have read the documentation
• [ ] Ideally, I'm providing a sample JSFiddle or a shared playground link demonstrating the issue.

What theme are you using?

bootstrap-4

Version

5.0.0-beta.18

Current Behavior

I'm using the following versions: "@rjsf/bootstrap-4": "^4.2.0", "@rjsf/core": "5.0.0-beta.18", "@rjsf/validator-ajv8": "5.0.0-beta.18",

The following regular expression for URLs was working with the latest stable 4.x build, but fails with the mentioned 5.x builds with the error: invalid regular expression: Invalid escape

pattern: "^(?=https)(?!.*\\bv1\\/api\\b)(?!^.*\\/$)[a-z](?:[-a-z0-9\\+\\.])*:(?:\\/\\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD])*@)?(?:\\[(?:(?:(?:[0-9a-f]{1,4}:){6}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|::(?:[0-9a-f]{1,4}:){5}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){4}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:[0-9a-f]{1,4}:[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){3}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:(?:[0-9a-f]{1,4}:){0,2}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){2}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:(?:[0-9a-f]{1,4}:){0,3}[0-9a-f]{1,4})?::[0-9a-f]{1,4}:(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:(?:[0-9a-f]{1,4}:){0,4}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:(?:[0-9a-f]{1,4}:){0,5}[0-9a-f]{1,4})?::[0-9a-f]{1,4}|(?:(?:[0-9a-f]{1,4}:){0,6}[0-9a-f]{1,4})?::)|v[0-9a-f]+[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:]+)\\]|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3}|(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD])*)(?::[0-9]*)?(?:\\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))*)*|\\/(?:(?:(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))+)(?:\\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))*)*)?|(?:(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))+)(?:\\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))*)*|(?!(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD])))(?:\\?(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\/\\?\\xA0-\\uD7FF\\uE000-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E\\uDB80-\\uDBBE\\uDBC0-\\uDBFE][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F\\uDBBF\\uDBFF][\\uDC00-\\uDFFD])*)?(?:\\#(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\/\\?\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD])*)?$"

Expected Behavior

This regular expression was considered valid when using @rjsf/core 4.2.7. I confirmed other tools accept it as well such as https://regex101.com/

Steps To Reproduce

playground link

Environment

- OS:Windows
- Node:v16.15.0
- npm:8.5.5

Anything else?

No response

[heath-freenome]

@ezzadeen does it work when you use the beta for bootstrap-4 as well? Using a 4.x version of bootstrap-4 may very well be part of the issue. Also, if you can create a quick playground example that would be great

[ezzadeen]

You can paste the following in the JSON schema of the playground. The UI schema will be empty {}. I can reproduce the error when I click submit. I don't see the error when I switch to the deprecated V6 validator.

{ "title": "A test form", "type": "object", "required": [ "url" ], "properties": { "url": { "title": "Gateway URL", "type": "string", "format": "uri", "qt-uri-protocols": [ "https" ], "default": "", "description": "The URL of the gateway", "pattern": "^(?=https)(?!.*\\bv1\\/api\\b)(?!^.*\\/$)[a-z](?:[-a-z0-9\\+\\.])*:(?:\\/\\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD])*@)?(?:\\[(?:(?:(?:[0-9a-f]{1,4}:){6}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|::(?:[0-9a-f]{1,4}:){5}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){4}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:[0-9a-f]{1,4}:[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){3}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:(?:[0-9a-f]{1,4}:){0,2}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:){2}(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:(?:[0-9a-f]{1,4}:){0,3}[0-9a-f]{1,4})?::[0-9a-f]{1,4}:(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:(?:[0-9a-f]{1,4}:){0,4}[0-9a-f]{1,4})?::(?:[0-9a-f]{1,4}:[0-9a-f]{1,4}|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3})|(?:(?:[0-9a-f]{1,4}:){0,5}[0-9a-f]{1,4})?::[0-9a-f]{1,4}|(?:(?:[0-9a-f]{1,4}:){0,6}[0-9a-f]{1,4})?::)|v[0-9a-f]+[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:]+)\\]|(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(?:\\.(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3}|(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD])*)(?::[0-9]*)?(?:\\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))*)*|\\/(?:(?:(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))+)(?:\\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))*)*)?|(?:(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))+)(?:\\/(?:(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD]))*)*|(?!(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD])))(?:\\?(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\/\\?\\xA0-\\uD7FF\\uE000-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E\\uDB80-\\uDBBE\\uDBC0-\\uDBFE][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F\\uDBBF\\uDBFF][\\uDC00-\\uDFFD])*)?(?:\\#(?:%[0-9a-f][0-9a-f]|[-a-z0-9\\._~!\\$&'\\(\\)\\*\\+,;=:@\\/\\?\\xA0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]|[\\uD800-\\uD83E\\uD840-\\uD87E\\uD880-\\uD8BE\\uD8C0-\\uD8FE\\uD900-\\uD93E\\uD940-\\uD97E\\uD980-\\uD9BE\\uD9C0-\\uD9FE\\uDA00-\\uDA3E\\uDA40-\\uDA7E\\uDA80-\\uDABE\\uDAC0-\\uDAFE\\uDB00-\\uDB3E\\uDB44-\\uDB7E][\\uDC00-\\uDFFF]|[\\uD83F\\uD87F\\uD8BF\\uD8FF\\uD93F\\uD97F\\uD9BF\\uD9FF\\uDA3F\\uDA7F\\uDABF\\uDAFF\\uDB3F\\uDB7F][\\uDC00-\\uDFFD])*)?$" } } }

[heath-freenome]

According to the AJV 8 docs, they changed things to assumed the \u is already there.

regular expressions in keywords "pattern" and "patternProperties" are now used as if they had unicode "u" flag, as required by JSON Schema specification - it means that some regular expressions that were valid with Ajv v6 are now invalid (and vice versa).

So technically this isn't an RJSF bug at all. Feel free to continue using AJV6, or go ahead and modify your pattern so that it is valid with AJV8. IF you have any questions about how to fix the pattern do reach out to the AJV folks on github for your answer. Sorry and thanks.