Strangest thing, shift goes back one screen?

The strangest thing is happening to me:
1) Go to http://www.starbase74.nl/forum80/forum_topics.asp?FID=2
2) Click the top announcement topic 'het forum is ge-update'
3) Scroll down with your mouse wheel, so that the Quick Reply box just appears on you screen, but don't scroll all the way down.
4) Click inside the (top left position) of the Quick Reply box, so you can type a message.
5) Hit Shift on your keyboard.
6) 9 out of 10 time, you go back to the topic list... It is important you don't scroll down all the way in step 3.

After a browser restart I didn't have this anymore, so it might not be reproducable at all, just thought I'd mention it in cast some-one else notices it as well. It seems to be somehow related to the RTE, but I'm not quite sure.    

I'm having the same problem again... it appears it IS reproducable.. By the way, it happens on IE 6 WinXP SP2.
    

Edited by rowdyvdveen - 23 March 2006 at 7:10pm