The basic gist of this issue is that making a game window exclusive fullscreen (not borderless windowed) on a non-primary monitor using a resolution that is not the native resolution of the monitor (using 1280x720 on a 1920x1080 native display) causes either:
- The window to become completely unresponsive to clicks and acts as though it is unfocused (no custom cursor, no mouse events, etc.)
- the window responds to mouse input but all input is offset and does not line up with the on screen position of widgets and in-game clickable objects.
Repro:
- Start Lyra in a Standalone Window
- Switch to windowed mode using Alt-Enter if needed
- Enter the game Front End
- Select Options → Video
- Change “Window Mode” to “Fullscreen”
- Change “Resolution” to something other than what it is natively
- Click “Apply”
The expectation is that, like on the primary display, the window would behave normally. This has also happened in the native resolution on the secondary display but with less consistent frequency (there may be things being done between attempts that cause it to succeed or fail).
This is using the raw Lyra project but the way we do this in our title and the way Lyra does these transitions is nearly identical.