For a smart guy, when he's wrong he is completely wrong. And any good work he might have done is wiped out by his arrogance. Not to mention he prevented bugs from being fixed.
But here is my favourite bug that cannot be fixed:
Basically, the number of steps on Gnome volume control can't be configurable because apparently there are no situations you would ever want to do that. Except for hardware setups that don't report back volume information...
I see what you did there:
What? Status is shown as "Fix Released", since the rise of Android and iOS has shrunk Microsoft's market share.