Word lacks the concept of shortcuts for AutoText, so during import simply the first couple of characters are taken, including spaces if any is there. However, spaces are normally not permitted (can't be entered), and mess up shortcuts: simply pressing F3 at the end won't do anything, the whole shortcut has to be selected first.
The easiest fix would be to strip spaces from shortcuts.
Another option would be to use initials instead, but they aren't very important, in Word entering them based on the suggestion after the first couple of characters seems to be the normal usage.
AutoText import from OOXML files was added by Szymon Kłos in 2017-04 and 05, perhaps that offers some clues where to find the relevant piece of code.
I don't have a sample right now, perhaps could try to create one later.
Observed using LO 184.108.40.206 / Windows 7.
(In reply to Aron Budea from comment #0)
> I don't have a sample right now, perhaps could try to create one later.
Any update ?
(In reply to Xisco Faulí from comment #1)
> (In reply to Aron Budea from comment #0)
> > I don't have a sample right now, perhaps could try to create one later.
> Any update ?
i'm setting this to NEEDINFO until the sample is provided...