I recently upgraded to Fedora 33, which comes with Evolution 3.38 (previously 3.36, iirc). Following the upgrade, I noticed that quoting in plain text emails appeared to have regressed. Previously, Evolution would wrap quotes at your recommended width, but by selecting the email and changing the style from “Normal” to “Preformatted”, you could avoid this text wrapping. With Evolution 3.38, this no longer works, necessitating manual line wrapping which is rather hit and miss: I managed to send mails where the message I was replying to ended up unquoted.
I haven’t figured out the quoting issue, though issue 1235 looks promising, but the wrapping issue is thankfully solvable. Turns out there’s a new (to me) “Wrap quoted text in replies” option available in the “Composer Preferences” pane of the “Evolution Preferences” pane, which accessible via “Edit > Preferences”.
Compare before and after:
Usable email again!