>>>>>>>>>>>>>>>>>>
>Just tried to reply to a message and experienced some odd behaviour.
>
>I clicked reply, typed a message the hit preview.
>
>I then clicked the back button and the previous page didn't have my reply (it reverted back to the original text). This must be new, because it's never happened before.
>
>I had also clicked reply, typed some stuff, then hit back twice to see another message, then forward twice (back to the reply I was typing) and all my changes where gone, it was showing the original text from hitting reply.
>>>>>>>>>>>>>>>>>>

No it's not new. Happenned to me a few times in the last two months. That's why (I think) Michel added a new update button.