Several of my users are reporting the same "closed -> open categories" issue after some while.
While diving in the DevTools I see a mention of 24 hours in the MemoryStorage:
View attachment 242280
Also on an older thread there is mention of this:
https://xenforo.com/community/threa...toragedata-is-not-adhered.170474/post-1387962 I looks like it should be possible to override this default setting with an extra data-xf-* attribute?
Maybe this can help shine some light on this problem