Definitely normal behavior, and also human, natural behavior. Things are where I left them last time.
I understand that in the 90s, disk space was a concern, and that disk operations were a big deal with moving parts, etc. But we really need to move on from this paradigm.
I just tested, and it looks like that "new" software does this on Linux, but "old" software didn't modernize. IntelliJ products, VSCodium does this, QOwnNote does it, Kate does it when I explicitly start a session (bit of a nonsense...), and no other software that I use does it: LibreOffice products, KWrite, Geany, GIMP etc all operate on the paradigm that when closing, it asks if it should save the draft document or no.