I can confirm that this issue is still present in Mint 15 with Mate (Mint 15 with Cinnamon works fine). And I can also confirm that the fix / workaround in comment #8 does work, thanks Andy.
I can confirm that this issue is still present in Mint 15 with Mate (Mint 15 with Cinnamon works fine). And I can also confirm that the fix / workaround in comment #8 does work, thanks Andy.