Comment 51 for bug 439448

I must say I sympathize with the previous comment.

Having said that, this is still happening. on various systems of mine, with different display drivers: I don't think it's a display driver issue.

Some have noted that this happens or persists after a system upgrade where the home directory is preserved - so old dot-file configuration options may still exist.

Has the upstream Gnome bug report been kept up-to-date?