I had my bixby button remapped to Facebook. It was then found that if you tap the screen to wake it up, drag open the camera button in the bottom right and then press bixby it would take you out of the camera to Facebook and from there rhe phone is unlocked and you can do what you want. I turned off the single tap Facebook button and it still works by double tapping in the camera app to open bixby. Is there a fix for this?
You will need to remap what the lockscreen buttons are doing as well since you disabled the the Bixby Button to open facebook.
To do this: Open your settings Menu> scroll down and tap on the "lockscreen" option> scroll down to "Shortcuts"> from there you can enable and disable both left and right shortcut buttons on your lockscreen, or remap them to do other things.