They're not "plugins". They're compiled in features. The Debian maintainer changed one compile flag and turned off these feature which are disabled by default in the UI anyway. And changing the compile flag didn't remove the options that enable the features from the UI. So, users are very confused why the features they're trying to use don't work. Further, what happens to existing users who had these features enabled and relied on them?

EDIT: link to a KeeppassXC maintainer explaining that they're not plugins: https://github.com/keepassxreboot/keepassxc/issues/10725#iss...