Comment 170 for bug 439448

Christian, I use solid panel background colour, which is semi-transparent. However, what I mentioned in comment #111 is not true any more, I've seen the corruption already twice since then... Moreover, I've even seen another type of corruption, described in my comment #157, so using my theme is, sadly, not a solution.

Just to test it, for 1 week I was using the default theme and our problem didn't appear there, I only saw it recently again. So it looks like it has nothing in common with themes.

However, a little helpful detail:
Using semi-transparent panel background excludes the main type of corruption for me, when the affected icon is a doubled one of a neighbouring icon. I've only seen the one when the icon is covered by a solid colour or the other one for which there's a screenshot in #157.