If you have LastPass browser extension enabled, for best results, I recommend setting LastPass' "This can read and change data" from "On all sites" to "when you click the extension".
Another workaround is to always ERASE the email address field before submitting any User-Management buttons, such as "Impersonate User", "Delete User", or other User view-context buttons.
Root Cause Description
When managing Users and attempting to "Impersonate User", LastPass will attempt to auto-fill in the *email address field, and when this field is changed, the LastPass provided value is submitted with the "Impersonate User" form, which in turn confuses Joplin Server.
This is a WONTFIX, just here to document/acknowledge the issue.
For documentation within my fork.
If you have LastPass browser extension enabled, for best results, I recommend setting LastPass' "This can read and change data" from "On all sites" to "when you click the extension".
Another workaround is to always ERASE the email address field before submitting any User-Management buttons, such as "Impersonate User", "Delete User", or other User view-context buttons.
Root Cause Description When managing Users and attempting to "Impersonate User", LastPass will attempt to auto-fill in the *email address field, and when this field is changed, the LastPass provided value is submitted with the "Impersonate User" form, which in turn confuses Joplin Server.
This is a WONTFIX, just here to document/acknowledge the issue.