Rated 4 out of 5 stars
I used this marvellous theme since ...ever!
Just now on version 52.2.1 (32 bit) of TB the message preview window stopped working (well) showing a fixed height box of few cm not custom for the message content with the mesg scrollable via the scrollbar but viewing a little slice at every scroll.
Good Job anyway! (but at the moment I am switching to another theme :-( too annoying, sometimes impossible, to read messages in the preview window)