The Poco F2 Pro received the stable MIUI 12 update a few weeks ago, and it appears the update broke an important feature. Owners of the Poco F2 Pro running the build "MIUI 12.0.1.0" have complained about the lack of Widevine DRM L1 support, with their phone now unable to stream HD content from platforms like Netflix.
https://www.notebookcheck.net/Stable-MIUI-12-update-for-the-Poco-F2-Pro-broke-Netflix-HD-playback-support.485264.0.html