Comment #8 on issue 602 by allber...@gmail.com: xmonad hangs when clickJustFocuses = False and the user clicks outside of the focused window while a submap is active. https://code.google.com/p/xmonad/issues/detail?id=602 handleEventHook is used when you are running from the main loop. This is actually not ideal, as submaps don't really want to be mixed into the main loop; reworking with the handleEventHook has several potential difficulties some of which you have already encountered. A potentially worse issue is that the main loop does not expect to be running under an existing keyboard grab, as it would need to in this case; I don't know offhand if this will be a problem, and didn't think about it in my initial response --- which is kinda bad as ignoring things like that is how we get extensions that hang or crash xmonad. :/ There is the additional issue that, since you're processing from handleEventHook, you don't get to deal with events that interrupt your submap --- exactly the problem you are trying to solve here. Switching window focus with the mouse in the middle of a key sequence that affects the focused window may lead to unexpected results and user confusion. This is why I brought up the third alternative. -- You received this message because this project is configured to send all issue notifications to this address. You may adjust your notification preferences at: https://code.google.com/hosting/settings