I've used WB7 on Windows 7 x64 for about a month and I ran into some small issues.
They are not anything deal breaking but it'd be great if they can be fixed in the future.
1. Whenever I load a new skin, the cursor in the Search textbox of the start menu is
positioned a bit higher than where it should be. Only when I click it, it goes to the normal
position, i.e. to the middle of the textbox.

[After a skin has been loaded]

[After clicking in the textbox]
2. When I right click on a full recycle bin, the "Empty Recycle Bin" appears greyed out (disabled)
although the recycle bin is full. If I hover the mouse over it, it goes back to normal.

3. The show desktop button doesn't stretch to the full height of the taskbar making it hard to
click or hover the mouse on it without looking which is pretty annoying.

[Notice that the white highlight doesn't stretch all the way.]
These 3 issues happen with all skins so I'm guessing it's got to do with WB7.
4. In Fences Pro, to reproduce the issue I had, set all settings to default, fill the recycle bin with
something, put it in a fence, right click on the icon and check "Exclude this icon from Fences' quick hide",
and finally, try to empty the bin. It falls out of the fence. I had this issue with a couple other
programs but I don't remember which.