Diff discussions header on merge request discussion tab is misaligned in IE 11

Summary

The file name header of diff discussions overlaps with the first comment on the merge request discussion tab in IE 11.

Steps to reproduce

  • open merge request discussion tab in IE 11

What is the current bug behavior?

file name header overlaps:

Bildschirmfoto_2019-01-28_um_13.44.18

What is the expected correct behavior?

file name header does not overlap as in Firefox:

Bildschirmfoto_2019-01-28_um_13.47.07