>Ok. I hope there is a workaround.
>regards

http://www.timeatlas.com/mos/5_Minute_Tips/General/Fixing_Firefox_PopUp_Window_Sizes/

I'll try this in a moment, because it is definitely a problem here with new FireFox and IE extension I downloaded ysterday. I'm answering you now from IE7.

UPDATE. Unfortunately this didn't fix the problem. All popups still open in the new window and truncated. Something else is amiss.