Tagset Properties restricted to the same Model should use the same "pool" of tags

(Bug, Investigate , Priority: Critical, Test Status: No automated tests yet , Reported By Bad Link: Thing 3y284oe not found, )
Tag Sets
Summary: If I have two different properties, each of which is a Tagset (or Optional Tag) restricting to the same Model, they should share a "pool" of Tags? (Ie, should tags entered into Property A show up in autocomplete on Property B even if unreified.)
Right now, they don't seem to.