Why is my S5 switching the lockscreen to the bubbles unlock?

[AC Question]

Why is my S5 switching the lockscreen to the bubbles unlock

I have always had my lockscreen be the pin login. Starting about a week ago. When I use the power button to shut the screen off then press it again to turn it back on the lock screen changes to the bubble swipe on its own. Any ideas?

Thanks

 

[Morellio Benoir]

When you have a bluetooth headset connected it changes to the bubble swipe. When you disconnect it, it goes back to normal. Seems like a security vulnerability, just don't keep them both in the same pack.