We have an issue in authoring external links with %20 or spaces in them. Linkchecker is considering it as a relative URL if %20 is present and removes the href attribute if spaces are present. Please suggest.
Internally the Linkchecker uses the URI class of the JRE, so the implementation should be ok regarding escaping and such. Can you set the loglevel for the classes "com.day.cq.rewriter.linkchecker.impl." to DEBUG and render that page again?