Recuperation gets "stuck" (ST1 2016 / ST5...)

Problem

ST1 / 2016: Recuperation no longer disengages after braking. After switching the bike off and on again, you can continue riding until the next braking process. 

ST5: can no longer get out of the recup function.

Solution

ST1: Eject and reinsert the battery during operation. Restart the Stromer.

ST5: Press the on/off button until the Stromer switches off (hard shutdown). Restart the Stromer.