While acessing "source" viewer via
/#repositoryBrowser;git/REPONAME;null;null there is no branch selector in the navigation bar. Only a tag selector is available.
There should be a branch selector to switch to
/#repositoryBrowser;git/REPONAME;development;null as like in the changeSet viewer:
note: can't see in the changelog that this is fixed until 1.28 ?! I currently only have a 1.22 instance. If it's already fixed: Sorry and close this as invalid ;)