I am using Chrome on OS/X, on a Norwegian keyboard. I have set up Cmd+< as an OS/X keyboard shortcut for "Move focus to next window", which I use to cycle between windows in Chrome.
A while ago (maybe 6 months?), I noticed that the keyboard shortcut stopped working while I was in Gmail. Nothing happens in Gmail either. The shortcut is not listed in the Gmail keyboard shortcut list (which is shown if I do Shift+?), and it doesn't work if I disable keyboard shortcuts either. If I do Cmd+L to move focus to the address bar, the shortcut works again..
This is very frustrating since I use Gmail a lot, and I have to do a few extra keystrokes every time I switch window.
Any ideas on how this can be fixed in Gmail??