A work around for this is to open any other app within the Owner Profile that uses a biometric fingerprint.
For whatever reason this triggers the OS to work properly again for me anyway.
I have a banking app I use or even my Gallery App's Fingerprint Protected folder does the trick. This workaround has been repeatable since the issue began some time ago.
Give it a try, see if it's repeatable and report back.
-Ghostlead