First, I typed x(x-1)=0 in Desmos and they showed the correct two lines.
Then I changed the equation a bit into x(x-1)y=0 and they added a third line. But the previous two lines were gone.
Expanding the x(x-1)y on the left doesn't actually help.
Adding 1 to both sides (making it x(x-1)y+1=1 ) doesn't help, either.
What should I do?
Should I expect one line or three lines for x(x-1)y=0 ?
Is it a bug? I don't know how to report a bug.