Hey Dan,
here we go again ;)
Bug: Custom attribute members are not filterable if multiple tasklists with identically named custom attribute but different members are opened at the same time.
Step by Step.
> I create two Taslists with an identical custom attribute "Gremium" (Meeting).
> The custom attribute of both lists is populated with different entries. List 1 Meeting 1-3, list 2 Meeting 3-5
> If I open both tasklists the list opend at first is filterable by "Gremium" and shows all entries "Meeting 1-3"
> The list opend second has the dropdownmenu "Gremium" but only shows the entries of list 1 "Meeting 1-3" not "Meeting 3-5" which would be correct.
> If I filter list 2 with a member used by both lists "Meeting 3" the filtering works...
Thinking it through while writing... could it be that the internal custom attributes names cause colliding identities when list 2 is opened? Or could it be that an event to refresh the lists entries on switching task lists is not trigged?
Lists an bugtrace enclosed