(The issue page of KeePassRPC on github told me to post a bug report here first.)
I use KeePass 2.57 with KeePassRPC 2.0.2.0 on Windows 11.
There I try to edit an entry, go to the “Kee” tab, then to the “Form Fields” sub-tab.
If I add a form field with one of the values “KeePass username” or “KeePass password” I cannot delete it anymore (button greyed out).
The origin is me doing something wrong, but I believe that it is unexpected behaviour. And I got stuck or a little while.
A workaround for me as a user is to change the form field value again to something else (edit is still possible). In contrast to the two predefined form fields the value field is changeable, too.
A preferred solution to me would be to forbid such values while clicking “OK” (as it is done with {username} – you’ll get a popup) or to have another mechanism to check for deleteability.