I use the Recent Discussions list, because I can't get rid of it (unlike FiberglassRV, which is run by the same provider and on the same software), and the problem I see with it occurs when a session is left logged in for a while, then timed out: topics which I had not read are still marked read.
The problem of going to the last post, instead of last unread, occurs on threads which I have not read at all yet.
Indications of which sub-forums contain unread posts are routinely incorrect, making that feature nearly useless. FiberglassRV works much better in this respect.
None of this is related to management of cookies by my computer, as it treats FiberglassRV and EscapeForum the same, but the forums behave differently.