Hookpad: Refesh/reload opens the original unedited song, not saved version

If I open a song from the TheoryDB in Hookpad, edit and save it under a new name, when tab is reloaded the original unsaved version is opened.

In this example the file has been saved under a new name, F5 to refresh and its replaced with the original.

Even if I manually reopen the saved file and refresh again the same thing happens. This is because the URL always refers to the original song. Saving under a new name should likely use a unique URL (or save the edit state using a cookie) otherwise reloading a tab acts as revert to original.