PG gem unavailable in Chef 11.6


Ohai, Chefs!

So, I’m using the Opscode postgresql cookbook to install the pg gem on
an omnibus Chef 11.6 install, and when I try to use the gem, it says
it’s unavailable. If I add a Gem.clear_paths after including the
postgresql::ruby recipe, then I’m able to use the gem fine, which sort
of makes sense. The thing that doesn’t make sense is why I don’t have to
do this in Chef 10 (10.16.4, specifically). Has anyone else seen this?
Is this a bug in Chef or the cookbook?