Milestone filter shows incorrect value on issue boards

Summary

The milestone filter on the issue boards page shows incorrect value.

Steps to reproduce

  1. Open link (pay attention to the milestone_title value in the URL): https://gitlab.com/gitlab-org/gitlab-ce/boards?author_id=&assignee_id=&milestone_title=9.1&search=
  2. Take a look at the milestone filter. No value is shown.

What is the current bug behavior?

Milestone filter shows incorrect (empty) value

What is the expected correct behavior?

Milestone filter should show correct value.

Relevant logs and/or screenshots

No filter:

Screenshot_20170327_154419

Milestone is set to 9.1 via URL:

Screenshot_20170327_154440

Output of checks

This bug happens on GitLab.com

Results of GitLab environment info

GitLab Enterprise Edition 9.0.0-ee f33774c