Ah! I see it now. It’s the default link to latest which you can’t switch back to. This is a Bug! Nice catch.
Repro steps:
- create a sidebar item with a link to
/latest?order=created - make sure “Link to the filtered list” user pref is disabled so the first Topics link goes to
/latest - click on the
/latest?order=createdsidebar item - then clcik on the Topics link to
/Latestand it will not switch back
Possible related bug: "Latest" on forum home displays last column sort