Focus Mode

Where has Focus Mode gone? I always use it and love it. It was there yesterday, now it's not. 

Please don't say that it is no longer available. I only have a small laptop screen, and without focus mode it's so awful.

Its still there for me...

focus mode seems to be gone.  replaced with dark mode option instead

Just looked again.  The icon only appears below the settings icon when you mouse over it.  Appears to be a bug.

Everything works, what's wrong?

Something changed since yesterday.  The focus mode link (spelled out not an icon) over to the right has been removed.

why my phone doesn't
have these buttons?

It should if you're in Desktop mode and not the mobile optimized site.