No actual scene group released an officially tagged PROPER for this episode unless there was a known audio or sync issue with an earlier release. If you saw x265 — proper somewhere, it may be a repacker’s own tag, not a standard scene proper.
A correct example following standard would be: and just like that… s01e10 x265
It sounds like you're looking for a properly formatted release title for And Just Like That… Season 1, Episode 10 in (HEVC) encoding. No actual scene group released an officially tagged