Looping mod_rewrite with Cyrillic. What is the problem?

Question

Apache HTTP Server

Good day!
There is a site on Bitrix, when you enter the url like http://site.ru/bla.bla , a loop appears. And only if there is a dot and only in Cyrillic, if without it, it drops to 404 as it should. Who will tell what to change and where to dig, I will be grateful!
here is the .htaccess

Options -Indexes 
#ErrorDocument 404 /404.php

<IfModule mod_php5.c>
  php_flag allow_call_time_pass_reference 1
  php_flag session.use_trans_sid off

  php_value display_errors 1

  #php_value mbstring.internal_encoding UTF-8
</IfModule>

<IfModule mod_rewrite.c>
  Options +FollowSymLinks
  RewriteEngine On
#RewriteCond %{HTTP_HOST} ^www\.(.*) [NC]     
#RewriteRule ^(.*)$ http://%1/$1 [R=301,L]
#RewriteCond %{REQUEST_URI} !/server-status
RewriteCond %{HTTP_HOST} ^([^www].*)$
RewriteRule ^(.*)$ http://www.%1/$1 [L,R=301]


  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-l
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME} !/bitrix/urlrewrite.php$
  RewriteRule ^(.*)$ /bitrix/urlrewrite.php [L]
  RewriteRule .* - [E=REMOTE_USER:%{HTTP:Authorization}]
</IfModule>

<IfModule mod_dir.c>
  DirectoryIndex index.php index.html
</IfModule>

<IfModule mod_expires.c>
  ExpiresActive on
  ExpiresByType image/jpeg "access plus 3 day"
  ExpiresByType image/gif "access plus 3 day"
</IfModule>

Answer 1

Hello, you can experiment with a rule that redirects to a domain from www, try replacing the lines

RewriteCond %{HTTP_HOST} ^([^www].*)$
RewriteRule ^(.*)$ http://www.%1/$1 [L,R=301]

on the

RewriteCond %{HTTP_HOST} ^domain\.com$ [NC]
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=301,L]