Crashes aren’t easily attributable to a particular /e/ version. Here’s one gitlab issue tracking it: Mail App crashes (2.5) (#8384) · Issues · e / Backlog · GitLab
a handful of recent reports
there’s a bugfix coming in /e/ v3.1 within Mail account management, seems to be in the ballpark of your description?
(would be useful for the crash detection / dialog to offer the cache reset in a button after n crashes or just do it)
Edit: there’s also an upstream bug that should affect /e/ too, but I don’t think the forum crashes refer to that, only shows when drafting - [Regression] Crash on screen rotation when composing email · Issue #8606 · thunderbird/thunderbird-android · GitHub