I checked it many times and am very serious to put this into issue forum.
Starting Cubase 10.5.12 primary and secondary time format in transport bar are the same but other than shown in ruler at the top of project window. Therefore pressing comma don’t change anything. If I change one of them by mouse, then all works perfectly - pressing comma key changes time formats as it is described in manual.
I think it was in 10.5.0 too, but not sure for that. Cannot check. In version 10.0.50 all is okay.?
So, it seems that it is bug. Something happened to the transport bar, because tempo field also is full of bugs. They live there and I’m aware of moving mouse near it. There are monster bugs, they eat my time, my ideas, my sketches… Please help!
(P.S. I reported here earlier about Tempo field at transport bar)