In FE, there are no naturals before the bottom voice d1/2/3 notes. The last one is absolutely necessary; in spite of that, it was not added in any of the subsequent editions, in which the additions were limited to a 
before d1 at the beginning of the bar. Moreover, FE (→GE) are lacking in the 
before c
3 in the 2nd figure; the accidental was added in EE. Significantly, the previous note, d3, is preceded with a , which was apparently understood as a cautionary accidental due to the d notes in the bottom voice and in the L.H.
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category imprint: Interpretations within context; Differences between sources; Editorial revisions
issues: EE revisions, Accidentals in different octaves, Inaccuracies in FE, GE revisions, Cautionary accidentals, Errors repeated in GE, Errors repeated in EE
notation: Pitch