Incorrect plugins selections in "Custom columns editor&

[LonerD]

Windows 8 x64.
TC 8.01 or 8.50 betas x32 or x64.
A lot of wdx-plugins.
List of wdx plugins does not display properly in "Custom columns editor" - no "down" arrow:
Image: http://i57.fastpic.ru/big/2013/1014/dc/29dbab30374176679b68772160c7ffdc.png

PS. Such mistake also in Custom columns selection menu.
Image: http://i60.fastpic.ru/big/2013/1014/6c/284c70d8954f2d16047d2aa426dfea6c.png
I have 45 custom columns, but no "down" arrow and I can't select menu item with mouse - only with keyboard it scrolls down.

[MVV]

I think it is a Windows problem because standard menus used there...

[Sob]

It's the taskbar at the top. When it's at the bottom, the menu starts at the top of the screen and goes all the way down over the taskbar. But then taskbar is at the top, menu starts below it, but its height is same as before, so it does not fit.

[LonerD]

But you can see that submenu for plugin shelldetails displayed correctly.