XnView Software

XnViewMP 1.4.4 64bit
Windows11 (22H2), display resolution 3840x2160, win scaling 150%

Viewer - Info
info disappears after fullscreen

To reproduce:
1. run clean portable XnViewMP
2. open image
3. press I to 'Show information'
Information appears
3. press F11 to go to fullscreen
4. press F11 or ESC to exit fullscreen
viewer has no Information

Thanks to your detailed description I can reproduce the problem.

This problem is supposed to be fixed in XnView MP 1.5.0 beta. Please check and confirm the bug fix here.

fixed in 1.5.0