Gnome Wayland - shows generic icon in Dock/Panel, also app title is shown as com.xnview.XnView in Dock/Panel
To reproduce - launch:
QT_QPA_PLATFORM=wayland /usr/bin/xnviewmp
I confirm a bug in xnviewmp with rotation value in exif. Using Linux. I tested different rotations via exiftool. You can try it with: exiftool -Rotation=0 file.mp4 exiftool -Rotation=90 file.mp4 exiftool -Rotation=180 file.mp4 exiftool -Rotation=270 file.mp4