what do you mean with "standard view"?

yeah. i think the contacts' avatars are stored somewhere sized 60 * 60 px.
rtcom default bubble for the avatars was/is 64 * 64 px.
that's why you have the avatar repeating itself on the right and the bottom of that bubble although it should be resized to these 64 px.

because:
the bubble is stated with FIX 64 * 64 px.
and in the avatar's block it's getting zoomed to 64 px width.
if you do that in css it should be automatically be resized in width AND height.
i don't get it either because it's working in the singleSMS view (when you click on one message bubble to view the message).
the avatar is there resized from the 60 px to 80 px without any problems!? o.O