Input boolean strange feature

Hi all,
only started with a new Pi and HA today and while I’m happy how far I’ve got with this great product I already have a question.

Why am a getting the toggle next to Input Boolean ? I’ve not seen that in anyone else’s example screenshots.
It toggles whenever I toggle either of the ones below and itself toggles both values. Is it a new feature ?

IP

In your card config set the show header toggle to false to make it go away.

It’s a way to turn on/off all switches in a card. It is a well documented feature.

Thanks for the quick reply Tom. Could you expand a bit please ? I’ve not added a card (that I know of).
All I’ve added so far is
input_boolean:
xmas_porch_lights:
name: Christmas porch lights
icon: mdi:pine-tree
lights_run_tonight:
name: Lights run tonight

A great tutorial: