It's difficult being compared with GitHub and bucketed with them from a UI perspective, but GitLab really are holding their own and seem up to it
To get an idea what our UX team is working on please see their update from this Monday:
Video https://www.youtube.com/watch?v=TMdw-plNfDQ
Slides https://docs.google.com/presentation/d/1LM6wHxGVRwHwQvGJiXwF...
I like what you guys are doing - my comment was more meant as a well-natured jibe against the recent Github changes, which I'm really struggling to like (the black header a few weeks ago, and today the search results interface).
This is the issue where we discussed the sidebar change. Feel free to see what contributed to the decision. https://gitlab.com/gitlab-org/gitlab-ce/issues/26200
This is the ongoing issue to discuss the change and any future iterations: https://gitlab.com/gitlab-org/gitlab-ce/issues/29835
We are working hard to improve UX and navigation specifically at GitLab. Our UX team is focused on design and user research. Here's some work on the research end: https://gitlab.com/gitlab-org/ux-research/issues/3.