[52-6F-62]

Correct me if I'm wrong but it appears they are now filtering the {} characters by URI encoding them upon submitting a search.

This isn't to say they've fixed anything else yet (I haven't looked), but it may mitigate the efforts of the lazy (like me in this instance).

[nihonium]

There were no filtering last time I've checked. Now, it looks like they've fixed the problem by completely deleting search results page, it's returning 404 :)