Thank you very much for the report and I am very sorry for the experience!
Based on the description, it seems to be a known issue to us. If you have 2 views referring to the same viewpoint, but with different view settings (for example, Scale), then by switching between 2 views, the labels might be detached from pointers. The issue should be fixed in Update 4 for Archicad 25.
As of now, the only workaround is to select all labels, open their settings and click OK without doing any modification as Aaron suggested.
I'm very sorry for the inconvenience! Feel free to ask if you have any questions, and thank you for your understanding!
Technical Support Engineer