So,
Now I realize that it doesn’t have to do with the scroll wheel.
when I adjust the tempo in the tempo box on the transport bar, it causes the “primary time display” parameter to change as well. So they’re linked somehow. But it doesn’t work in the other direction. Moving the primary time display doesn’t affect the tempo.
Weird.
Then I found this:
Going to have to do some contemplation on why these two things would be connected.
Tomorrow…