Masking Invert button missing

[MDFSr.Photos]

My masking invert button is missing. Accidently dragged the masking window into the right column then movef back out but now cannot find the invert button. Need Help. 

Mike

[Chuck Uebele]

Can you post a screen shot?

[S_Gans]

Hi. A screenshot would really help us see what's going on. In the meantime, just know that if you select the mask, then use Cmd/Ctrl+I, that should invert your mask.

[D Fosse]

It's at the bottom; just scroll down or expand the panel.

Although most of us have never used it, we just press ctrl+I to invert.

[Trevor.Dennis]

A good catch Dag.  I'm inclined to add resetting the workspace to restore all pannels to their norm oe default size and positions.

[Jaben74]

Same issue here. Luckely found this topic. But was is the solution?

Did a clean install on a new device and I assume defaul settings are actif. Invert button is missing. So I assume resetting to default settings is not the solution.