Subject: Tactics editor bug?

All aspects of the game works perfect, but for some odd reason, the tactic editor doesn't work properly.
I've created a new tactic and then my screen turned off.
I first thought it to be the battery of my laptop, but then it turned on again but my editor screen turned completely green and my cursor didn't respond to any clicks on the editor. Yet, if I clicked on a random menu link, the game instantly responds and all goes well.
Going back to the editor, the same problem appears... Any thoughts??

Nothing of that happens in Opera. Try another browser

Edit: It just happened to me in the match viewer (Firefox). I got a white page when I maximize, only the sound worked

(edited)

It's okay now... I tried again after 15 minutes... no problem anymore :-/

But it was not the matchviewer, but the tactic editor.