Issue: The problem with editing the article with non-Latin name

Strange. Here a demo article "Масло" is edited properly...

It started happening after upgrading to 3.0.7.

I have tried toggling redirect messages, but still cannot reproduce this issue. Does this happen all the time, or perhaps only when the user is required to log in after clicking Save Changes?

Do you have any other mods installed that use the redirect_generic or header_redirect hook locations?

Yes, it always happens. And yes, perhaps these hooks are used by some other modification... how can I check this (only by manually disable all of the plugins)?

Strange that it happened exactly after the upgrade to 3.0.7...

There were no changes in 3.0.7 that would be related to this. It looks like the encoding on vBulletin's redirects is not using the forum language setting for the character set on your site. So if you have some custom redirect, it could be causing problems.

In AdminCP > Plugins & Products > Plugin Manager, sort the plugins by Hook Location. If you have any other mods for the ones I specified, let me know.

OK, thanks!
Looked and saw that these hooks are used only by VaultWiki.

Also I disabled all plugins except the wiki, but it did not help

Yep... the $url variable at the time of processing the "header_redirect" hook is already distorted

If you edit vault/tab/edit.php, find:
And replace with:
Is there any improvement? This would not be a fix but help to narrow down the cause of the problem. Are you aware of the database collation for the table 'vault_revision' or its column 'title'?

Unfortunately, it did not make any changes...
Table "vault_revision" same as column "title" have a collation "utf8_general_ci", like everything else in the forum database.

I do not know what to assume.
About two months I did not install the new plug-ins. Just updated the forum and Wiki...

Did you create any custom plugins for the following hooks:

• vault_url_generate
• vault_url_encode

No... not even touched VaulWiki code at all...

In php.ini, make sure that:

• mbstring.internal_encoding is commented or = UTF-8
• mbstring.encoding_translation is commented or = Off

Yes, everything is just so...

I'll try to install version 3.0.6 and see how it will be..

Please see: http://www.vaultwiki.org/issues/2182/

If an error message is being shown during the redirect, it could be changing the content encoding for the URL to the browser/server default rather than using the wiki settings.

Nope... it doesn't fix a problem... finally lost hope to deal with it...

After further investigation I can see that what seems to be happening is that certain characters are being removed from the URL - among them hex 9A, 82, 8B.

What is the value of your setting at Settings > Options > Censorship Options > Blank Character Stripper?