Currently many things are broken.
e.g. we can't restrict the search with tags using /search/SEARCH/TAG because no "/" can be used in a search term.
somehow related to #1934
After fixing this bug, please reenable the /search/SEARCH/TAG rules in the rewrite config.
Issue #2573 was marked as a duplicate of this issue.
What is causing this bug? Is it the URLRewriteFilter, the Tomcat, mod_proxy, or something else?
URLRewriteFilter decodes the url before matching and rewriting the request
The used URLRewriteFilter has got a version 3.2.0_jaeschke. Current version is 4.0.3. Any chance to know what exactly you fixed back then, @jaeschke?