Erro in forum

I hope someone can help me? dolphin 7.2.1

If I put english language as standard, there is no problem (see photo)

Once I change the language, also the included Russian then I get a display problem (see photo)

Greetings,

Rudolf (Dutch)

It looks like some language strings are missing or incorrect translation, I would suggest to check forum language files:

modules/boonex/forum/integrations/base/langs/XX.php

Then recompile forum lang files.