Possible issue when cloning a course with quotes in the classic block

[eri-trabiccolo]

I'm not able to reproduce this issue on my end, but this has been reported by one of our customers, and I want to keep track of it in case other similar cases will pop up: HS-108804

The customer says:

I noticed that when I clone a course there is extra code added to the lessons. Wherever there is a " in the html, it adds \"

For example:

• Story Maps 101
• Blog Post: 10 Essential Steps for Story Map Success

This breaks all of the links, embeds, inline styling, etc. The only components I have in the affected courses are Classic blocks. I haven't tested this with other block types.

System Information

System Report

``` System Report: Wordpress ------------------------------------------- Home Url: https://pxxx.org Site Url: https://pxxx.org Login Url: https://pxxx.org Version: 5.3.2 Debug Mode: No Debug Log: No Debug Display: Yes Locale: en_US Multisite: No Page For Posts: Not Set Page On Front: Home (#17) [https://pxxx.org] Permalink Structure: /%year%/%monthnum%/%day%/%postname%/ Show On Front: page Wp Cron: Yes Settings ------------------------------------------- Version: 3.37.6 Db Version: 3.37.6 Course Catalog: Programs (#6) [https://pxxx.org/programs/] Membership Catalog: Memberships (#7) [https://pxxx.org/memberships/] Student Dashboard: My Account (#9) [https://pxxx.org/my-account/] Checkout Page: Purchase (#8) [https://pxxx.org/purchase/] Course Catalog Per Page: -1 Course Catalog Sorting: menu_order,ASC Membership Catalog Per Page: 9 Membership Catalog Sorting: menu_order Site Membership: Not Set Courses Endpoint: my-programs Edit Endpoint: edit-account Lost Password Endpoint: lost-password Vouchers Endpoint: vouchers Autogenerate Username: yes Password Strength Meter: yes Minimum Password Strength: strong Terms Required: no Terms Page: Not Set Checkout Names: required Checkout Address: required Checkout Phone: required Checkout Email Confirmation: yes Open Registration: yes Registration Names: required Registration Address: hidden Registration Phone: hidden Registration Voucher: optional Registration Email Confirmation: yes Account Names: required Account Address: hidden Account Phone: hidden Account Email Confirmation: yes Confirmation Endpoint: confirm-payment Force Ssl Checkout: no Country: US Currency: USD Currency Position: left Thousand Separator: , Decimal Separator: . Decimals: 2 Trim Zero Decimals: yes Recurring Payments: yes Email From Address: -- Email From Name: -- Email Footer Text: Email Header Image: Cert Bg Width: 800 Cert Bg Height: 616 Cert Legacy Compat: no Gateways ------------------------------------------- Manual: Disabled Manual Logging: no Manual Order: 1 Server ------------------------------------------- Mysql Version: 5.7.27 Php Curl: Yes Php Default Timezone: UTC Php Fsockopen: Yes Php Max Input Vars: 1000 Php Max Upload Size: 50 MB Php Memory Limit: 512M Php Post Max Size: 100M Php Soap: Yes Php Suhosin: No Php Time Limt: 3600 Php Version: 7.3.12-1+ubuntu18.04.1+deb.sury.org+1 Software: Apache Wp Memory Limit: 40M Browser ------------------------------------------- HTTP USER AGENT: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.79 Safari/537.36 Theme ------------------------------------------- Name: Astra (child) Version: 1.0.0 Themeuri: Authoruri: http://wpastra.com/about/ Template: astra Child Theme: Yes Llms Support: Yes Plugins ------------------------------------------- 3D FlipBook - Light Edition: 1.9.20 Advanced Custom Fields PRO: 5.8.7 bbPress: 2.6.3 BuddyPress: 5.1.1 Gravity Forms: 2.4.16 LifterLMS: 3.37.6 LifterLMS Advanced Quizzes: 1.0.10 LifterLMS Assignments: 1.1.4 LifterLMS Customizations: 1.0.0 LifterLMS Helper: 3.0.2 LifterLMS Labs: 1.5.2 LifterLMS MailChimp Add-on: 3.1.2 LifterLMS WooCommerce: 2.0.12 Loco Translate: 2.3.1 MathJax-LaTeX: 1.3.11 Popup Maker: 1.8.14 Responsive Lightbox: 1.3.2 WooCommerce: 3.8.1 WooCommerce Customer/Order/Coupon Export: 5.0.6 WooCommerce Stripe Gateway: 4.3.1 Integrations ------------------------------------------- BbPress: Yes BuddyPress: Yes WooCommerce: Yes LifterLMS MailChimp: Yes Template Overrides ------------------------------------------- content-certificate.php (ver: 3.18.0): /nas/content/live/pxxx/wp-content/plugins/lifterlms-customizations-master//templates/ (ver: 3.18.0) content-single-lesson-after.php (ver: 3.0.0): /nas/content/live/pxxx/wp-content/plugins/lifterlms-customizations-master//templates/ (ver: 3.0.0) ```

I wonder if there's any connection with #1026 except for our plugins, anything else shared? ACF Pro at least, as far as I can see.

Adding the "bug" label, just because it has been reported as such.

[thomasplevy]

Customer has noted that the issue goes away with ACF Pro disabled.

[eri-trabiccolo]

I knew it was it!