The new Windows 11 (Original Release) Release Preview Build 22000.2479 has several bug fixes along with a few small improvements such as changing the spelling of Ukraine's capital from Kiev to Kyiv.
The new Windows 11 Beta builds 22621.2338 and 22631.2338 also include a new Focus Session widget as part of a Clock app update along with a long list of bug fixes for Insider users.
Microsoft shipped an update to Windows 11 this week that includes several fixes. Screen brightness, widgets, and VPNs should all work better following the update.
Microsoft released the August Patch Tuesday updates for Windows 11 users. To get them, just open up Windows Update and apply any available updates. You can also download them for offline installs.