I have two copies of the xwiki 15.10.5 (for tests) and the latest 15.10.7 (for production)
I found a problem, Name Strategies does not work in 15.10.7. More precisely, it works until the first reboot of the server or tomcat. And after the reboot, when importing spaces from Confluence via Filter Streams Converter, the paths to the pages remain in Cyrillic.
In Global Administration: Name Strategies I see that it seems to work. When creating a new page manually, it also works, but when using Filter Streams Converter, the paths remain in Cyrillic.
I double-checked the configurations that are set for Name Strategies in version 15.10.5, they are identical to the settings in 15.10.7, but in 15.10.5 Name Strategies works when importing spaces from Confluence