Comment 8 for bug 957879

OK, I have discovered that the culprit is the Compiz fade animation on close for Tooltips.

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Workaround:
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In Compiz Settings Manager, under Animations, "Close Animation" tab, look for the window match line for Fade that reads:

(type=Menu | PopupMenu | DropdownMenu | Combo | Dialog | ModalDialog | Normal)

Edit that line and add to the end of it:

& !(class=\.exe$)

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Resolution:
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Please add this rule by default so as to avoid bothering Wine users. Thanks.