After a while Kee stops auto-filling passwords. When I restart Keepass it works again. I am not even sure this is a Keepass/KeepassRPC or Firefox/Kee addon issue. Keepas 2.45, Firefox 79.0, btw. Is there a good way, i.e. checking log files, to find out? This was not an issue with previous versions of KeePassRPC/Kee.
There’s information about logging in Troubleshooting which should help you narrow down if the problem is with Kee, KeePassRPC or some other software on your system.