Hi,
I believe the message you reply to contains a signature delimiter,
which looks like “-- \n” (quotes for clarity only and the “\n” is a new
line, thus “dash dash space new-line”), which is recognized and
everything below it is stripped, because nobody should write below the
signature (and because you do not want to see millions of signatures in
the message).
Signature stripping can be disabled in GSettings (or dconf-editor), try
to execute:
gsettings set org.gnome.evolution.mail composer-reply-keep-signature true
That the old/ancient Evolution you used before did not strip the
signature could be because it did not recognized the delimiter. There
had been some improvements made to enhance the detection.
Bye,
Milan
P.S.: if you are still on Fedora, then the current one is Fedora 37,
which brings Evolution 3.46.x, which is the latest stable series at the
moment. Not that it changes anything, I’m just saying so.