Steps to Reproduce
In a Geneva Patch 4 instance:
Access any Knowledge article form.
Click the gear icon, and in the Personalize form drop-down menu, unselect any field.
Click Save or Update to save the form.
The system makes the fields you removed read-only.
Go to the same Knowledge article form and click the gear icon again.
Note that you cannot select the field that you just unselected because it is now read-only.
There is no known workaround for this issue. To receive notifications when more information is available, subscribe to this Known Error article by clicking the Subscribe button at the top right of the article. If you are able to upgrade, review the Fixed In field to determine whether any versions have a permanent fix.
Related Problem: PRB665890