Xscreensaver installed but only comes on when watching Netflix

I installed xscreensaver and removed the default that came with Ubuntu 20.04. When the computer is idle for 5 minutes the screen goes to a soft-glow black with no screen saver appearing. However, if I am watching Netflix and don’t move the mouse for 5 minutes the screen saver starts and I have to enter a password to get back to watching. This is exactly wrong. Like, literally 180 degrees wrong from what should be happening.

What steps should I take to reverse these?