I am not an authority on Chopin, but this pdf differs from Fontana edition I have.
My Fontana reprint does not have legato in bars 3, 5, 7, and has no first legato in bar 6. But it has pedal marks there. I did not look further.
You can find two autograph versions and Fontana version in the National Edition Vol. 27 (posthumous waltzes).