Fullscreen issue:entering/lost full screen message

[RetroJesus]

Hi
I'm new here and just started using Dolphin 5.0.
I use other emulators like Retroarch, PCSX2, PPSSPP.
Mainly interested in playing console games.
I'm also using LaunchBox to launch my games.

I have installed and configured Dolphin with Direct 3D11 to run my AMD Radeon GPU. Left everything on default, although I tried several
options to see if the issue would go away.

I set it to fullscreen on and aspect ratio to fit to window.
I keep getting this message across the screen in every game.
If I star a game in small window it's ok but whenever I turn it to Fullscreen I get that message and I can't toggle back from Fullscreen
to window mode:
Here is the screen:



Any help?
Thanks