A couple more things I noticed:

The topic-title-links cause me to click by accident when scrolling through them, because the link is wider then the actual title. I think it should be visible which pixels are a link and which aren't, and leave some space horzontally for scrolling by dragging the screen.

I think some vertical space in the topic lists can be saved while still keeping the links finger friendly.

There are now two links per topic to go to the last reply: the arrow-icon and the number of replies. You could save some space by leaving out the arrow, and that would also minimize risk of clicking that instead of the OP.

The italics of the quotes makes them less readable. I think color/backgroundcolor and maybe some kind of quote marks would be enough to indicate that it is a quote.