I was fighting behind a wall and I could not see Kana at all. After selecting my group and moving them a bit I found that it was because the door (a 3D object) was occluding both Kana's model and selection circle completely.

 

Note Kana in the screenshot here:

 

 

Another reason to completely remove occlusion on selection circles while paused as I suggested here:

 

http://forums.obsidian.net/topic/76965-i-cant-see-pls-make-combat-clearer/?p=1664752

 

bump

I've noticed this is still happening in 1.06, making combat in doorways almost impossible to decipher. It looks like too many other 3D elements are also occluding selections circles when they really shouldn't, like blood splats. Please fix this Obsidian!