There is a wordpress site with buddypress as one of the parts of the site. URLs on the site are Russian. Nginx server. Configured exactly as specified in wordpress codex about nginx.
If you go to any group buddypress, using the menu items, buttons and links on the site, then everything is OK.
But if you copy the group url to the clipboard and then paste it into the address bar in a new browser window, you get an error 404 not found.
Links look like this:
site.com/группы/название-группы All pages in the buddypress settings are set as necessary.
Where to repair? In nginx? In wordpress? In buddypress?
The same happens with the pages of the participants and the ribbon.