The changes between 38.2 and 38.2.1 are minor and unlikely to
make any difference.
That said, I use Gmail routinely and haven't seen any issue, nor
was any issue reported by the beta testers. If you have a specific
set of actions to try, I can see if I can reproduce your problem,
but if the steps are "try using Gmail" there's no way I can
replicate it to repair it. You're welcome to use 31.8 for as long
as it serves your purpose.