Here is a list of issues still open with Build 21370:
https://aka.ms/AAb4rf8 Manage Disks and Volumes shows internal SSD even when it is an HDD.
https://aka.ms/AAayvn0 Some or all new feature configurations disappear after a scan "CHKDSK C: /F"
https://aka.ms/AAbwjod Right Click > Open With > does not have the option to open with Paint anymore for files without extention. (Build 21354.1+)
https://aka.ms/AAbwet8 Build 21354.1+, mspaint.exe cannot be opened by system