HTTP ERROR 404 (PaperUI, ClassicUI)

I went back to #1383 and #1380 but I still have the 404 problem on accessing BasicUI or PaperUI.
OH still changes e.g. accesses to https://<ip>:<port>/basicui/app into https://<ip>:<port>/login?redirect=/basicui/app which does not exist.
Seems the upgrade to #1386 has put than into some config file that isn’t changed back on downgrading.
Anyone to know how to get rid of that ?