Branch/Tags Switch Selector can not work when open in a new tab of web browser

1. go to any page with a branch switch selector control.
2. click the control and right-click any other branch, then click 'open in new tab'
3. the same pages opened in the new tab with the same branch instead of your wanted branch.

screenshot as follow:

The following discussion from gitlab-ce!28282 should be addressed:

• @leiminghany started a discussion: (+3 comments)

  Problems:

  1. The ref swither can not work while openned in a new tab of window.