when changing the settings on size and location, they dont update and get randomly stuck on the screen.
here is what i did:(the size was default to 128 which is why i wanted to change it originally)
i changed the size to 64 then saved. resulted no change.
changed it again to 32, again no change.
swapped position to bottom right and now it updated.
this was the wrong location for me but no other changes updated the location and size.
relogging didnt change the location either.

After restarting the pack completely it was updated to the correct size and position.
with a fullscreen map unavailable i was planning on changing the size for a bigger map when i needed one but i dont think thats viable at the moment.

hope this info helped in figuring out what the issue is.