Resolved

Posted by Graham Perrin on Apr 23, 2010; 7:28am
URL: https://support.nabble.com/post-closed-no-longer-expanded-when-switching-from-Threaded-to-List-or-vice-versa-tp4949059p4949080.html

I was using the wrong switch — the view of the topic, not of the post.

From a design point of view, maybe better to have views switches consistently towards the right of the window (not at opposite sides).