My phone can be unlocked without ask any pin or fingerprint ! (bug)

[SPeaky]

This happens at least once per day and I don't know what to do.I press the power button and phone skips the lockscreen,going to directly homescreen.If someone takes my phone and this happens,it can be really dangerous.Is it an Oreo bug and what should I do? As I said,it happens 1-2 times per day (max 2 times) but still a serious bug 

[RuneJ]

Then you can be proud of being the possible only one with that problem.:smileysmileythumbsup:

[SPeaky]

I've performed a software repair and will check if it's worked.If it is not,I will have to wait for a new update or get used to it unfortunately

[admad]

I've managed to replicate this bug, and it's still existing in newest software! (47.1.A.12.145)

To replicate this bug, when the phone is locked and screen turned off, press the power button with finger that is saved in fingerprint database, and when the phone unlock itself after reognizing fingerprint, quickly press the power button again to lock the phone, before the icons are shown. This bug is present when the screen goes off right after showing icons on main screen. (it is about less than 0,1s when you can see the icons, so this is kind of tricky to do). Then, even if the screen is turned off, clicking the power button gets you directly to the main desktop, phone unlocked with no fingerprint or password check.