File name in merge request diff no longer is a permalink

Summary

The file name in a merge request diff does not link to the file.

Steps to reproduce

  • open merge request diff
  • click on file name

What is the current bug behavior?

file name is no permalink:

Screen_Shot_2018-11-13_at_16.31.24

What is the expected correct behavior?

file name is a permalink:

Screen_Shot_2018-11-13_at_16.30.54