Hello @XakepSDK, can you check if the en_US.UTF-8 locale is enabled on your system? (from https://github.com/ValveSoftware/steam-for-linux/issues/6005#issuecomment-502343008)
I have de_DE.UTF-8, en_US.UTF-8 and ru_RU.UTF-8 enabled
Thanks for checking, looks like this issue is already being tracked at #2122. Closing in favor of the existing issue report.
Your system information
Steps for reproducing this issue: