For the first link you need to indicate the base URL otherwise the parser cannot know if the URL is some external stuff or if it’s internal (it’s not indicated in the export package).
Second link look like a reference escaping bug. The best would be to create an issue on Loading... and attachment the smallest possible package which reproduce the issue.
So after testing in a fresh instance of XWiki I can confirm I fixed the issues I notices (URL format not converted and . not escaped in the wiki link).
One link stills look broken because:
URL: the space name in the source URL does not match the actual space name, looks like there is some kind of alias in that package I did not noticed before (only encountered number ids and display name until now)
I would need to know what you have in the source for this one and what you expect in the end. It was not in the test package you gave. There is many things involved in the conversion of a link.