Diff fails to load on pull request page when target branch doesn't exist yet.
A branch wfmcom/QD-1337 doesnt exist yet so because of this bug it's diff doesn't load for this Pull request. Instead it throws an error (also see screenshot):
Merging topic branches this way is our main git-flow approach and it used to work just fine before last week.
We are a remote team and it's very hard to go to the parent team and ask them to create a copy of master branch in target repo and name it as target branch only so diff would display. This kills the whole automation idea.
Please pay attention to this issue!