new button? or just an extension?

there is a dark mode/light mode switch on the top right corner of the lobby. is it a new button or is it just an extension?

I dont have it

Maybe only the website has it and not the app. idk tho because the site DOES have a few more features...

Yes this is a new feature.

Ok thanks @Vertonghen

Give me some other examples of features @UltraMuddish

Yes, sometimes it disappears @AdItYaWiThAsUiT

i had that feature for some time and it vanished :(

Now i am in dark mode, bat can't comeback to light mode.

i dont have this button, i suggest if you are having problems post in the Lichess Feedback thread

I have it too, but I think it is a bit glitchy right now. It also disappeared for me too.

I've encountered that.