The shortened 
hairpin in bars 83 and 85 is certainly an inaccuracy of GE (→FE→EE). The figure – or its variant – appears four times (bars 83, 85, 91 and 93) and each time the sign embraces in A four quavers. In the editions, only in bar 91 the sign was reproduced correctly. In EE, due to a very dense placement of notes, the hairpin in bar 83 took the form of an accent.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Inaccuracies in GE, EE inaccuracies
notation: Articulation, Accents, Hairpins