Environment

JRuby 9.1.8.0 / 9.1.5.0 on OSX and Linux + graphql-ruby gem

Behavior

ATM i'm trying to get graphql-ruby (https://github.com/rmosolgo/graphql-ruby) to work on JRuby. The only real showstopper right now is that occasionally strings like "unit" or "limit" are binary encoded rather than UTF-8 or 7Bit ASCII which are properly encoding on MRI.

As can be seen on Travis (https://travis-ci.org/rmosolgo/graphql-ruby/jobs/223395132) this happens reproducible on every test run. Running the failing test cases isolated however works without any issues.

I'm working on a simpler repro case, but failed to create a truly minimal one.