Noticed they do not work on my 0.7.2 atm
I've enabled topic thumbnails? and file upload (mite help reproduce the bug)
should prolly also mention topic thumbnail upload file option gave me this nice big red error message something to do with MSIE i think
I am only able to reproduce this if the "non-fluid" container is active. Fluid (100% width) view does not do this at 67% zoom.
Edit: Ah nevermind, it does happen in both views, just on smaller browser viewports.
Edit: Only seems to happen in Lavender.