I am in the process of migrating our app from ExtJS 2.2 to 3.2.
One of the few things I still have to resolved is an issue with the dropdown menus in the columns header of a grid (i.e the ones that you access to add or remove a column from the grid)

It used to work OK in ExtJS2.2 but now the dropdown menu is trimmed in IE ( the width is not being calculated correctly)

I am attaching two pics, one with the correct behavior


and one with the incorrect one.


If anyone can give me a hit on where to start searching/debugging, it would be greatly appreciated. I can send as many details as necessary about the code, but there is nothing to out of the standard in it.