I'm sight-reading the second (2a : "Version with later authentic variant") Chopin's nocturne in Eb for piano, Op. 9 No. 2, and I am unsure about how to read the left hand in the second bar :
Does the last "natural" sign in this second bar apply to the D or the E in this case?
I'd say the E but it also would be redundant with the first one in that case so I wonder if it wasn't meant for the D.