This is actually an expected behavior of TubePress 4.x and above; templates are cached on the filesystem, so any edits won't show up without user intervention. We are working furiously to polish and document TubePress 4, so for now please continue to ask your questions here and we will be glad to assist.
In short, if you edit a template in TubePress 4.x and above, you'll need to clear the "system cache" so TubePress sees the changes. You can do this by adding tubepress_clear_system_cache=true to the end of the address bar. For instance,
Please give that a try and let us know how it works for you. Thanks!Go to the full post