correct.

To be precise, i have LBUTTON mapped to F11, and RBUTTON mapped to F11 as well
F11 is my /follow macro basically, so my toons are always following whenever i move the main.

At the moment i've removed the RBUTTON mapping to have it playable. if i remove both then there is no issue.
I've noticed that using both mapping with 2 wows gives about the same camera weirdness as using 1 mapping with 3 wows, so my guess is that the drag/mouse info (or whatever is passed) is passed twice each time (if that helps the investigations at all)

Cheers,
-Zub