In the generated manifest.xxxx.json the path is has Double //:
Can confirm, this is still a thing. Weather it causes any issues or not i'm unsure, but it's still a thing in 2.0.8.
Thanks for report @awronski, @MikeSheward. With 4afaa673cba141ac8e31a890980ca191e86e194c commit (Landing in 3.0.0-beta.1) we now use posix path to join url parts and resolve this issue.