Merge When Build Succeeds never happens

Summary

When a Merge Request with a running CI build is marked for "Merge When Build Succeeds" nothing ever happens when the build actually succeeds

Steps to reproduce

  1. Create branch and Merge Request
  2. Commit
  3. Watch CI kick-off
  4. Click "Merge When Build Succeeds"
  5. Wait for CI build to pass

Expected behavior

Branch should be merged into chosen branch

Actual behavior

Nothing

Relevant logs and/or screenshots

Gitlab version: 8.12.4-ee

Screen_Shot_2017-01-05_at_15.30.36