Missing scrollbar using LayoutDialog and EditorGrid

[plu]

Hi,

i'm using LayoutDialog to show an EditorGrid in a GridPanel of the dialog. I guess i'm doing something wrong because i'm missing the scrollbar of the grid. When i start scrolling the grid using my mousewheel the scrollbar suddenly turns up.

See screenshots:
http://www.pqpq.de/temp/ext1.png
http://www.pqpq.de/temp/ext2.png

The relevant code is there:
http://www.pqpq.de/temp/extplu.js

Maybe somebody has an idea what i'm doing wrong (or maybe in the wrong order?)?

Thanks in advance,
plu

[plu]

Hm. I just tested this in Firefox 2.x / Linux and the problem disappeared. Seems to be a Firefox 2.x / OSX related problem :(