Hi,
In animation panel, when you pan and scroll MMB, the top and bottom rulers will lost sync. What is different about the two ruler?

One of the ruler is obviously in a bogus state.
I can get it to repro by zooming out far away.
You can get back to a correct state by hitting ‘H’ on the keyboard to home to the scene animation range.

I logged a bug for it: #73605 Zooming out the animation editor corrupts the rulers