I installed 1.3.24.1 (from the latest Google Play version) today.
On XT-907 (Droid Razr M), in portrait mode, it is now hard to select (check-mark) the messages:
Because of the disappearing side bar, the area of where one can check-mark has narrowed down, so when you are trying to check-mark the message, you either bring out the side bar or open the message.
I hope you can fix this in the next build.
I would expect that if the "check-mark" area is widened just a bit that would help.
Thank you!