Android Why always perform biometric authentication twice to unlock WhatsApp?

[Futureized]

This is ongoing since last few weeks, couldn't find a solution.
I have to perform biometric authentication twice to unlock WhatsApp (set to auto lock after 30 minutes)

Any workaround?

 

[bssunilreddy]

This is ongoing since last few weeks, couldn't find a solution.
I have to perform biometric authentication twice to unlock WhatsApp (set to auto lock after 30 minutes)

Any workaround?

For me it asks only occasionally to enter the 6 digit pin number no biometric authentication.