A commit that reverts a merge does not show up in the timeline of a PR

[Weyaaron]

Select Topic Area

Bug

Body

Dear Community,

I have an issue with a commit I uploaded. According to flairNLP/fundus@b3d8493 the commit
referenced on this page exists on GitHub. But it does not show up in the timeline of the pr for the async branch: flairNLP/fundus#239
The latest commit in the PR according to the timeline is flairNLP/fundus@b6d951f. In my opinion,
the PR and the branch should be in sync, but they are not.

Any help is appreciated.

Greetings,

Aaron