I have a different problem with portraits on party frames; they flicker.
Constant flickering for no apparent reason at all. I also have portraits on player/target frames, and they don't flicker. So far it appears to only be an issue with the party frames. Not sure if it this also happens on raid/arena frames.
The code I use to display it is very straight forward, no hokus pokus that can explain the behavior I'm getting;
Code:
local Portrait = CreateFrame( "PlayerModel", nil, self );
Portrait:SetPoint("TOP", self, "TOP", 0, 0);
Portrait:SetPoint("BOTTOM", self, "BOTTOM", 0, 0);
Portrait:SetPoint("RIGHT", self, "LEFT", self:GetHeight(), 0);
Portrait:SetPoint("LEFT", self, "LEFT", 0, 0);
self.Portrait = Portrait;
Is this something you're aware of or am I the only one experiencing this?
EDIT:
The portraits aren't merely flickering, they appear to be resetting themselves constantly. The animation constantly restarts, several times each second.