Seems this may be a problem.
Be sure to report it to your local support people.
https://archicad-talk.graphisoft.com/viewtopic.php?f=20&t=74111
A bit of a worry as I am looking at rolling 25 out very soon.
So far my 25 template (based on my 24 template) has not increased in size.
Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11