Your signature says you are using version 19? (I see colour in your icons so that must be correct).
This is a known issue in later versions.
https://archicad-talk.graphisoft.com/viewtopic.php?f=11&t=70970&p=317521&hilit=layout+rotate#p317521
Make sure you have the latest update for your version and maybe try the 'Open & Repair' option on the file.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11