XnView Software

XnView MP: 1.6.2 64-bit (Windows)
OS: Windows 11 - 64-bit

When entering full screen mode there is usually a momentary white flash of two horizontal bars at top and bottom of the screen just before the Full screen image appears

Effect: Display glitch

To reproduce:
1. Browse to a folder with images (mine were jpg)
2. Select one of the image files.
3. Open fullscreen (view) using either F11 key or View->Fullscreen
Actual behaviour (bug): Momentary white flash (top and bottom) just before image appears

Expected behaviour: No white flash before the image appears

i can't reproduce, could you send me your .ini?

xnview.ini attached

Perhaps I ought to have added I use portable zip version, set a black background.
I have xnview MP it on three computers, it happens on all of them.

Thanks to your detailed description I can reproduce the problem.

This problem is supposed to be fixed in XnView MP 1.6.3. Please check and confirm the bug fix here.