Evolution again as default email app/client

Sorry for the late reply, it has been an intense time (incl. COVID-19-infection).
I agree Evolution is not perfect and I am sorry that experience some issues. If you can, it would be great if you file some bug/issue reports on the [Evolution GitLab page](Issues · GNOME / evolution · GitLab — https://gitlab.gnome.org/GNOME/evolution/-/issues).
You can also mention and discuss it on the Evolution mailing list.
I recently had two issues and got helpful answers on the mailing list and the bugs I reported were quickly attended and could even be fixed.