Just disable bitlocker and enable it back. But before you do please check the registry.
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\FVE
EncryptionMethodWithXtsFdv
EncryptionMethodWithXtsOs
EncryptionMethodWithXtsRdv
Make sure that the value for all encryption method are showing the same.
In my case all values should be 7 XTS-AES 256-bit