Trade bug, unable to make offer

Hi,
i am having problem, i cant make a trade offer. It looks like this:

When i enter trade chat and click "Add offer" and then "Select" all i can see is this:

http://i.imgur.com/gbK70.jpg

I cant pick up f.e. stone and put them on trade.
Im using small netbook and i guess that's the problem (resolution or sth).

Making this window movable, or resizable would solve the problem, or maybe i am just doing something wrong?

I didnt submitted ticket yet, page is not working correctly, cant do this neither :)

Had this problem too using latest version of Firefox on a 10.1 inch notebook running Windows 7 starter. To get around this, I had to maximize the browser play area. Here's how I did it:

1. Right Click to an empty space to the right of the Firefox tab (right of the + symbol). A checkbox list appears with "Menu Bar" at the top of the list.
2. Uncheck all entries except for "Tabs on Top". Leave that the only one checked. An Orange pulldown menu also appears with "Firefox" label at the top left corner.
3. Left Click on the Orange pulldown menu. You will see "Full Screen" 2 lines above "Exit".
4. Left Click on "Full Screen". If this works, the Windows taskbar hides/goes down and Firefox hides/goes up. You now have a maximized play area.
The whole screen is now TSO (as if there's no browser there). Now when I bring up the Trade box, the slider is now visible together with the OK and Cancel buttons. You should now be able to trade.

Now, the annoying parts. If the mouse pointer hits the top edge of the screen, the Firefox tab goes back down and does not go back up unless you right-click on the empty space again and this time, left-click on the "Exit Full Screen Mode". Then you do over with Orange pulldown / Full Screen dance. Less annoying is the URL display in the bottom of the screen (black font on white background). Try to catch it with the pointer and it just switches left to right and back (Can't seem to make this disappear, but then I can trade so it's no big deal).

Because of the small screen, I also have the resolution on the highest setting (1024 x 600) available on this netbook.

Hope this helps!