Editor toolbar in "Edit Ticket" has some issues under Google Chrome (BB-2510)

When I try to** edit an existing ticket** the editor toolbar seems to be broken under Google Chrome. //(see attached image)//\\\
It seems like some buttons are hidden and some others perform the wrong task //(eg. the "blue guy" icon asks me for a changeset instead of a username)//

Unfortunately I can't verify the issue with other web browsers because I'm abroad and my laptop is too slow to run FireFox. I hope this can help anyway.