Mobile sidebar improved. The sidebar on small screens now opens as an overlay rather than pushing content to the side, making thread reading on phones much smoother.
Reaction display on busy threads. When dozens of people react, the reaction row now wraps cleanly and shows counts that are easier to read.
Group page thread list no longer overflows on mobile. Panels with many pages of threads fit the screen width correctly on phones.
Invite button icon. The "invite people" button now uses a bullhorn icon, making it faster to spot.
Print layout. Page layout when printing a thread has been improved.