The same green arrow (maybe gray in this time) that is always visible in the column somewhere? Thing is that i cannot see the hover blue when i am not hovering the column
I will try to elaborate why current experience is weird to my brain
I can hover whole thread row. It conveniently shows me where i am in the list, now, the hover effect hints me that whole row is clickable, good. Nothing hints me that one of the 5 columns behaves differently tho. I immediately got the behavior of the "new" column (even without clicking/hovering), but about the "last post" i found out just now.
True, maybe i am the only one here who did not realize that this column is clickable.
Hope that explains