Fixed|UI|libdeng2|Stereo 3D: Allow enabling UI composition during busy mode
Fixes an issue where the display would remain black after launching straight into a map with -g and -warp options.
Also, during libdeng2 Widget tree notification, handle the situation when a widget is removed from the tree after a notification method has been called on it.
Fixed|UI|libdeng2|Stereo 3D: Allow enabling UI composition during busy mode
Fixes an issue where the display would remain black after launching
straight into a map with -g and -warp options.
Also, during libdeng2 Widget tree notification, handle the situation
when a widget is removed from the tree after a notification method
has been called on it.