Issues with multiple overlapping volume mounts, some read only

Docker Desktop for Mac
1

Expected behavior

When running with multiple volume mounts, some read only, and some read-write, the inner most is mounted first, like they are on Linux

docker run -v bar:/a/b:rw -v baz:/a:ro ubuntu:14.04.4

Actual behavior

docker: Error response from daemon: rpc error: code = 2 desc = "oci runtime error: could not synchronise with container process: mkdir /var/lib/docker/aufs/mnt/3efc0d785b155dd727bd91be48976d1c5dc6796875c6760b25173939a2271368/a/b: read-only file system".

Information

$ pinata diagnose -u
OS X: version 10.11.6 (build: 15G12a)
Docker.app: version: v1.11.1-beta14.5.m
Running diagnostic tests:
[OK]      docker-cli
[OK]      Moby booted
[OK]      driver.amd64-linux
[OK]      vmnetd
[OK]      osxfs
[OK]      db
[OK]      slirp
[OK]      menubar
[OK]      environment
[OK]      Docker
[OK]      VT-x
Docker logs are being collected into /tmp/20160610-102827.tar.gz
Most specific failure is: No error was detected
Your unique id is: 7CFE656C-0DB7-4AD1-B22D-6843D04F7C6C

Steps to reproduce the behavior

  1. mkdir {baz,bar}
  2. docker run -v bar:/a/b:rw -v baz:/a:ro ubuntu:14.04.4