Incorrect state of charge in Renault 5

Using ABRP as an app on my Renault 5, it reports an incorrect state of charge compared to to the car itself, Enode and Renault’s own application. The battery level is consistently three percentage points too high — or thereabouts; just updated it, and now it’s four…

(I think I’m an internal tester of the app; don’t know where else to report the bug.)