Comment 6 for bug 358574

I'm going to go ahead and dupe this to 359392 since the (relative!) ease of reproducing it matches my experience with that bug.

However, I am certain we have multiple X freeze bugs (most of which seem to be either extremely rare, or corner cases), so I can't say with 100% confidence yet that this is the same bug. So, after 359392 is fixed, you'll want to re-test this, and undupe if you can still reproduce the problem.