I have a peculiar problem. When I'm posting or editing a new message in my vBulletin 4.2.4, the message editor behaves oddly. The mini-icons (some of them), such as: *Font Size*, *Text Color*, etc. are either missing or blinking and when I hover my mouse on them, it stops and those mini-icons either appear as they should or stop blinking.

Happens in Google Chrome, Mozilla Firefox is displaying it correctly. I'm bringing this issue up, because if Google Chrome is the one to blame, they might take this feedback from vBulletin.

Any idea, what could be causing this?