I am currently using a secondary profile as my main one. I had saved a fingerprint, but only for unlocking specific apps. The option to use the fingerprint for lockscreen unlocking was disabled. However, today, unexpectedly, I was able to unlock my lockscreen using my fingerprint.
Upon checking the settings, I found that the option was still disabled. It was only after enabling and then disabling it again that the fingerprint unlock option disappeared from the lockscreen. I have taken screenshots of the settings and my lockscreen, although I'm not sure how helpful they will be.
I have been unable to reproduce this issue. As far as I can recall, I had opened an app that required fingerprint unlocking, and then immediately locked my screen, perhaps even before the app was fully unlocked. Subsequently, the fingerprint unlock option appeared on my lockscreen.
Is this a known issue? If not, is there a way for me to provide useful logs related to this situation?
Edit: The app i unlocked was Whatsapp