XF 1.5 Thread preview position is wrong


New member
Hey guys,
Since I made my html tag position: relative (in order to make my footer always on bottom), my thread preview position messed up, and is now farther bottom from where it should be, only when I able to scroll down the page.
If the page isn't scrollable (such in forums with only a few posts) it works just fine.

any ideas how to fix it up? (removing position relative from html isn't an option for now..)