Fingerprint scanner not working

[Tom_11]

I just downloaded the Beta 4 update and I noticed that the fingerprint scanner does not work on several occasions. 

It works at times and doesn't some other times. 

[SamsungUSABetaTeam]

Please try clearing the system cache and rebooting your device.

If issue persists, please send us an error report with screenshots from One UI Beta App (Beta Feedback -> Send feedback-> Error Reports -> "Select Category" -> Input frequency and Description" -> Send (Top Right Icon). We appreciate your help for supporting beta program.

[k_m]

Beta 4...
When I unlocked with fingerprint without waking up the screen, it turned black screen. Need to swipe up to unlock it.

[k_m]

like that. after fingerprint.