I asked this many weeks ago, don't think I got an explanation afaik...

Identical behaviour on both 4a and 2xl.  

When I switch from owner to other user profile the screen for password input comes up but no keyboard. 

The only way I found to get keyboard to pop up is to first long press power button to bring up that menu and then back out.....keyboard will then pop up every time. 

Also when ending session on other user and going back to owner most often I can just use fingerprint to get in but half the time I have to do the  power menu thing. 

Am I missing something or is this normal?