I'm not sure yet whether this bug is related to Core or Contrib (given that it involves NoBorders) or even if it's some other X related issue, so I thought I'd post it here for feedback and to see if anyone can reproduce it... I've searched high and low for other cases but haven't been able to track any down. My apologies if I've overlooked answers/reports like this elsewhere or if this isn't an appropriate venue for this message. Summary: ======== Transparent/composited floating windows fail to redraw/update if resized from full screen with NoBorders. With borders the problem doesn't manifest (e.g. if resized from tiled mode with borders already visible). Details: ======== With compositing on and multiple windows stacked in Full screen mode with XMonad.Layout.NoBorders active to remove the full screen border, resizing the visible window into a floating window results in the window no longer updating/redrawing. The window does still accept input (e.g. terminal commands can be issues if it's a terminal window, for instance). If the window is resized to floating from a normal tiled mode, it retains a border and draws/updates properly. Compositing via xcompmgr -Ethan Schoonover