Fingerprint sensor stays activated after verify pin successfully.

[rushdroid]

I have one plus 6t phone and it has on screen fingerprint sensor. I am using this library for security purpose. It worked good but there is one issue with the library.
Here are the steps.

1. I open Enterpinactivity first time. It will ask me to set a pin. I set it to ex.1123
2. I open it second time it ask me for pin/fingerprint. I choose to enter pin.
3. It will successfully done. But the fingerprint sensor still shows up to on screen.

Please resolve this issue.

Note - You need to release fingerprint sensor if pin code verify successfully.