[olpc-community-support] Chat scrolling issue

[Yoshiki Ohshima]

> The bug is filled against a different component perhaps. Did you search for "scroll" in all tickets? It may no be filed
> to the chat-activity component.
> I'm sure I saw the ticket, really, no need to make a new one, just to find it!

  The primary one is #2351.

  Also reported many times: #5054, #4636, #3886, #1907, #3648.

-- Yoshiki