top placement wrong until window resize

[justinoue]

I have no dynamic/resizing elements on my page but for whatever reason if I use the top placement, the bubble is always covering the element instead of being on top. If I resize my window it pops into the right place.

Bottom works fine.

[mmlumba]

I'm experiencing this issue also with both the top and left placements.
On page load:

On page resize: