About five months ago there was an internal change in spellcode that
caused Trilloring to not to use charges when invoking certain spells.
And you nassty mortalsses did not think it important enough to report,
it only got to our knowledge by accident.
Now, this change will eventually get fixed, I suppose it might well
take a, say, 5 month time, after which the invokes will probably be
enabled again. Would this have come out sooner, we might have been
more inclined to do a faster workaround for the item while waiting for
a proper fix for the internal stuff.