I'll try to update to 2.3.7 soon... (Project organisation)
...and see what happens.
Personally, I think that the behaviour of read/unread posts is currently the most important issue of the forum, in terms of ergonomics. If the 'Refresh' is to be really useful, the effect of refreshing should be a view with all posts "read" and not "new". And I think most users will share my view.