When browsing source for a repository that has a folder with spaces in the name, the source browser renders the "%20" in the file path breadcrumb rather than a space.
Additionally, pressing reload on the page re-renders the breadcrumb with no space in it the second time.
Repro steps: Create a repository with a folder name containing a space in it.
Browser: Chrome 61.0.3163.100
OS: OS X 10.12.6