I see what you mean.
You can move the marker but not the text in the marker.
I would say it is a bug - maybe something in the script for the marker that could be fixed up if you knew what to look for.
Personally I still use individual sections for internal room elevations.
Internal elevations don't work well in all situations.
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