"Command H" on OSX causes a crash.

in Bug reports
If I accidentally tap "Command H" (Normally when I'm trying to hide the grid, as I've used Photoshop in the past) the main window vanishes. I'm told the application is still running but I can't open any windows, save, load or indeed exit (unless I force a quit.) OSX seems to think things are normal doesn't report that the app is unresponsive.
What, if anything, is Command H supposed to do? Is there a way to kill that keyboard combination?
What, if anything, is Command H supposed to do? Is there a way to kill that keyboard combination?
Comments
Is there a way to override that keyboard shortcut or anything?