I think you can be 100% sure it's a bug.If it is a bug then fine. If it is intentional then Pioneer Services is not worth a 5million upkeep.
Would be nice to know.
The issue tracker is unfortunately a popularity contest, if you could confirm that you can reproduce the bug that probably still helps a little bit.Saw this happening as well, voted. No use to comment there i assume as it seems same for everyone.