Little fun fact I’ve picked up about washing machines often giving “wrong” times. These are estimates and they regularly change throughout the washing cycle.

Especially right before the spinning program starts, the machine needs to carefully adjust the weight inside of it, so that the unbalance does not do any damage.

Thank you, updating the firmware was the issue. Added this to the Original Post. :-)

As Sonoff doesn’t seem to offer invoices, I’m not sure if it is a ZBDongle-P or -E, but I will check out updating its firmware, good thinking!