[Ext:4.2.0 Beta] Weird things happen after clicking headers of grid in IE8

[lutiayi]

step 1. Open any application. e.g. Google Chrome
step 2. Open IE and navigate to http://localhost:****/examples/grid/binding.html
step 3. Click the first header or any other headers of the grid

IE window was hidden behind the Chrome, the same thing happened in tree panel.

[lutiayi]

Step 1. Open Google Chrome or any other applications.
Step 2. Open IE 8 and navigate to one page contains a tree panel.
Step 3. Click the first header of the tree panel, then click the second one, the IE becomes hidden behind the Chrome after clicking the third header of the tree panel, and such things happen in grid as well.

[lutiayi]

It still exists in the Ext 4.2 RC.
Would you fix this issue in the Final Release?
thanks very much.

[andrewx]

I just came across this bug too. It seems kind of difficult to reproduce consistently, but I will try to track down the steps.

Edit: For me it only appears to happen when trying to open the column menu

[evant]

Probably the same thing as this: http://www.sencha.com/forum/showthre...has-single-tab