Please describe the problem:
If alt-tab is started with the right alt key, it seems non functional.

I saw the other bug about a 'sticky' alt tab, but this does not seem to be the
behaviour that is described there.

If I hit right alt + tab, i get the window switcher window. Letting go of right
alt does not make the window go away, and pressing tab separately moves the
currently selected window move to the next. However, neither pressing enter or
space makes the selected window come to the foreground.

In the absense of separate working funcionality, I'd expect right-alt + tab to
work just like left-alt + tab. On my kinesis ergo keyboard, sometimes its easier
to just hit the right alt. 

Steps to reproduce:
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Actual results:


Expected results:


Does this happen every time?
yes

Other information: