It isn't a bug. It's just that the Reply button used to be the leftmost (at least I think it was) and now it's been shifted over and Previous is on the left.

>Hi.
>If you are using Firefox, have you tried to refresh only the frame with the buttons?
>I had problems with the buttons and I did a refresh and everything got OK.
>In Firefox, RightClick one of the buttons, select 'This Frame', 'Reload Frame'.
>In Internet Explorer, maybe you have to do a full Refresh.
>
>>>new previous button is another problem for me. I just click button for reply on the left and moving other message. new previous button is a good property but it's place is bad.
>>
>>Same here. A number of times since the buttons were moved around I have clicked Previous, thinking I was clicking Reply.