Checking out a remote branch as a new local branch does not update the dropdown filter of branches

Summary

When you check out a remote branch as a new local branch, the dropdown filter of branches does not automatically refresh with the new local branch.

Environment

SourceTree for Mac

Steps to Reproduce

1. Open a git repository that is already linked to a remote repo
2. Featch all branches from the remote repo
3. Checkout a remote branch as a new local branch, e.g. develop here:
4. Once it is created, click the dropdown filter of branches, you will see that develop is missing:

Expected Results

The newly created local branch shows in the list

Actual Results

The newly created local branch does not show in that list

Workaround

If you close and re-open the repo window and then re-open it, the local branch name will show up in the dropdown