TYPO3 Core

What is the language of the charset in the BE and FE? Do you use UTF8 for all as your DB setting suggest?

Yes, I use UTF-8 everywhere (BE/FE). This is an example of Hungarian language, but it makes the same problem as for other languages (Slovak, Czech, Polish, ...). As I mentioned above, when I comment "rawurlencode" in typo3/sysext/cms/tslib/class.tslib_content.php (starts on line 1930), the problem is over.

1. part of TYPOSCRIPT CONFIG (BE)
   config {
   sys_language_uid = 0
   language = hu
   locale_all = hu_HU
   metaCharset = utf-8
   renderCharset = utf-8
   htmlTag_langKey = hu
   additionalHeaders = Content-Type:text/html;charset=utf-8
   }

1. part of FE HTML source code
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   <meta http-equiv="content-language" content="hu" />

If you need more infos and details, let me know please. Thanks.

This looks like a duplicate of #3527

Yes, you are right, this is the same problem as described in older bug #0003527. Thanks for finding duplicate. But I'm just reporter and that's why I can not merge bugs, do some "relation" to existing bugs or even delete it.