When the user enters an URL into the location bar that contains U+8238 (the right-to-left character), the DNS error message text often gets garbled, due to a missing U+8236 (the left-to-right character) after the URL variable in the error page's XUL code. For example, the URL "http://(U+8238)gro.allizom.allizgub" (correct display: "http://bugzilla.mozilla.org") results in the following error message on a Hungarian build (other language builds are also affected, but most display more subtle errors, like a misplaced dot): "A Firefox nem találja a kiszolgálót a(z) .neyleh bugzilla.mozilla.org" instead of: "A Firefox nem találja a kiszolgálót a(z) bugzilla.mozilla.org helyen." In pseudocode, the error is this: Instead of "A Firefox nem találja a kiszolgálót a(z) %s(U+8236) helyen.", the string is "A Firefox nem találja a kiszolgálót a(z) %s helyen.". When %s contains an U+8238, then without a terminating U+8236, the entire text block, including the word "helyen", will be treated as right-to-left. (On RTL builds, a similar error can be generated using an U+8236 in the URL - in that case, an U+8238 is missing.) Reproducible: Always Steps to reproduce: Go to the URL. The error is more pronounced in a Hungarian build (or any other build with text after the above example's %s), than in an English one.

Oops... the URL was wrong. New Steps to reproduce: 1. Go to the URL. 2. Click on the link. It should show the error.

Updated URL again. Also, happens on Windows too.

Ping! Still an issue on 4.0.1.