The lack of a staccato dot for E flat must be considered Chopin's oversight in A (→GE1→FE), as all the remaining bass notes in the accompaniment of that type do have dots. The reason for such inaccurate notation could be corrections, the traces of which are visible in this place in A. The dot was added in EE and GE2 (→GE3).
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources; Corrections & alterations
issues: EE revisions, Corrections in A, Errors resulting from corrections, GE revisions
notation: Articulation, Accents, Hairpins