[UsagiYojimbo]

For \1 in the regexp without the marker, even with "URL encode" unchecked, the "()" have been replaced with "%28" and "%29", and the spaces with "+" (can be seen in the return variable, $$x). The total input is 51 characters long, the regexp without marker returns characters 1-55, so maybe the replacement happened before the regexp match, thus spoiling it?

...

P.S.:
ScraperEdit v0.1.2-66

I have to look it up in the sources, and in SVN history, to find out that somewhere between versions 0.1.2-60 and 0.1.2-65, an "URL encode" function call was added to the very beginning of the debugging process. That means that the Scraper got an already "URL encoded" title in $$1.
I cannot remember, though, why was that added, and also no mention of it in the CHANGELOG file, either...
Maybe i should bind it to a configuration setting...