[dlwh]

> Yes it does. AFAICT it's working well. There are 5 releases in the 2.10.x line and I haven't had a compatibility issue between any of them.

This isn't quite true. I have a library (Breeze) that works with 2.10.3 but not 2.10.2. Something in name mangling changed, I think.

[densh]

This is most definitely a bug and you you should really report a breaking example to https://issues.scala-lang.org/