EDIT

Applied in changeset taxeditor|c127cb13020855f630fc93b36842e45d063997e0.

The problem in the ticket description is solved. Ticket can be closed.

Something I found when testing:

Can we use human readable titles when creating titleCache? E.g. Named Area (or better named area) not NamedArea. For Term Type it works already as you can see in the picture but I don't know if we can do it the same way:

Applied in changeset taxeditor|210af90ccae0c45e1234bdb8fe216285293546c6.