I have not got access to a windows computer currently - so at the moment this is only verified on a Mac (OSX 10.6.3)
When using a chat window via the desktop.air application - the backspace is non-operational.
You can backspace using ctrl+h, but - this is obviously counter intuitive for non unix users.
Apologies if this is not the place to report errors with the desktop.air application - there is just so very little information about it.
