An update,
I have now tested other programs I have, like Cubase and Transcribe, which have
similar behavior, if I click as discussed, the cursor hooks up or stops.
So I don't think it's related to PG Music.


Band in a Box & Real Band 2023 (latest build)
Windows 11 Home - Intel Core i7-8750H - 2.20 GHz - RAM: 32 GB
Steinberg UR-RT4