As Electrum binaries are wrappers around a python package, shouldn't it be possible for OP to find this file in his operating system under something like /usr/lib64/python-3.<something>/site-packages/electrum/electrum/wallet_db.py and report the final seed version listed there, just for clarity?
I don't think so because all these files are compiled into the binary but I'm not sure since I'm mostly a Windows user
and on Windows there are only dll files.
In any case when opening Electrum the UI shows the version in title bar and also in the About window accessible from Help menu.