Your system information

• Steam client version (build number or date): Built: Sept 13 2021, at 22:01:31, Steam package versions: 1631572918
• Distribution (e.g. Ubuntu): Ubuntu 20.04.3
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

Steam client for linux has bugged age verification page on store. You can choose your birth date but menus remain open and does not disappear until i quit Steam client.

Steps for reproducing this issue:

1. Install Ubuntu 20.04.3 and add Kisak Valve Mesa Fresh PPA
2. Fully update system and install Steam client
3. View any game page with age verification page