Where is my ATC window going?

Probably some simple, but can’t figure it out:

I just upgraded my main monitor to an ultrawide. I also run 2 smaller displays that I use to run navigraph, atc, etc.

Now, when I bring up the atc window and click on the arrow on top, so that I can drag it to one of the smaller displays, the atc window just disappear…

Any ideas?

Probably somewhere off the screen. Maybe try to set your old resolution again, if the windows appears again then drag it to the middle of your srceen. After that go to the new resolution again.

Maybe it stays in the middle.

Setting to old then resetting to new resolution should do the trick. I have the same issue with my ultra wide display sometimes…