lock screen serious problem with sleep

[Neal Becker]

I have 2 monitors (laptop + external).  If I close laptop lid, system will 
sleep.  Now disconnect hdmi to monitor.  Now open lid.  lock screen is 
displayed.

But there is no way to enter the password.  I can move mouse around.  
Caplock is responded to.  But I can't enter any characters into the password 
field.

Only thing I can do is switch to VT, and do systemctl restart sddm.