Debug rails server in zeus on IntelliJ 2017.1.3 doesn't stop at breakpoint

I'm trying to debug rails app using zeus, by following roughly this procedure. I've tried a few different mutations, none produce desired result. Is there a way in IntelliJ to debug a rails server while also using Zeus? None of the combinations below worked.

a) The procedure I used for RM2017:
 
- start zeus in debug mode

- run 'bundle exec zeus server ' from command line.

With rubymine, this results in breakpoints hitting in the zeus process. with IntelliJ, it doesn't. Server keeps running.

b) start Rails Server in run mode from IntelliJ

results in the server correctly using Zeus, but no debug.

c) start Rails Server in debug mode from intelliJ

results in server starting w/o leveraging zeus (i.e long startup), but debugging functionality does work.

IntelliJ IDEA 2017.1.3
Build #IU-171.4424.56, built on May 12, 2017
JRE: 1.8.0_112-release-736-b21 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.12.5