https://arstechnica.com/gadgets/2021/02/apple-rolls-out-macos-big-sur-11-2-with-bug-fixes-and-bluetooth-tweaks/

Today, Apple pushed out a small update to its macOS 11 Big Sur operating system for supported Mac laptops and desktops. Labeled Big Sur 11.2, the update "improves Bluetooth reliability" and fixes a number of bugs.

Those bugs include one widely reported issue with the Mac mini in which external displays would show only a black screen when using an HDMI-to-DVI converter. Also, it fixes an issue where the System Preferences panel would not unlock after a user enters their password in some cases, as well as a bug that sometimes prevented changes made to Apple ProRAW images from saving.