Dummy window created when entering fullscreen

[James-E-A]

Every time the core enters fullscreen (not counting instances where the game was started initially fullscreened), a dummy window is created. Entering and leaving fullscreen multiple times will create multiple dummy windows.

These windows do not respond to keyboard shortcuts, and cannot be closed. They usually statically display the last frame that was on the window prior to entering fullscreen. They can only be disposed of by completely closing RetroArch - unloading the core, switching to a different core, and even loading a different ROM do not destroy the dead windows.

The current workarounds are:

• Don't enter and then leave fullscreen
• Send the dead windows to another workspace (may not work on Windows)
• Just deal with it; the windows don't do anything harmful

[heuripedes]

I can reproduce this on X, this is related to the context sharing setting. RetroArch does tell X to close the window but my guess is that X refuses to because one (both maybe) GLX context is not destroyed when the viewport is reconfigured. The glx context driver code has been mostly the same for the last 6months+ so this behavior might have been introduced in a somewhat recent change to either X11 or GLX itself.

[James-E-A]

The "HW Shared Context Enable" (video_shared_context) option had no effect on this bug (in case this information is relevant.)

[GPDP2]

This is not happening on my end, at least on Windows 7 and Xubuntu. Can someone verify?