D7RC1 [Bug] Blank page upon Presence Update

Can others please confirm if this is a bug?

Update your "Presence" status using the Simple Messenger bar. Screen goes blank, although in correct URL. Refresh, and everything is Ok, including "Presence" status update.

Tested on online demo using FF 3.5.5

you mean the bottom bar?

Correct.

no i use same browser and it seems working okey!

would be nice if the wall accepted status messages instead of simple texts by default though