Action fine tuning is not showing the full height of the slide

I have the problem now that action fine tuning is not showing the bottom edge of the slide. But the action I'm trying to fine tune, is at the bottom of the slide, so I can't see what I'm doing!?

The slide is shown full width correctly.

The bottom 10% of the slide is hidden behind the sliders bar. 

I'm on Win11, just updated from Win10. (company update)

I have the latest version of Storyline.

I'm in the middle of a big project. I need this to work... 

Any ideas?