Wrong formatting of AJAX-loaded messages

Jak vyvolat chybu:
Go to messages and open some larger conversation

Chybné chování:
When there're multiple messages from the same person one after another the frame is broken:

A
A
B
B
B
---- AJAX ---
B <- here it's broken
A
...

Předpokládané chování:
Frame of the AJAX-loaded messages should match the frame of previous messages