Amounts multiplied with wrong factor when changing decimals setting immediately after cancelling decimals setting change

[Marmo]

1. change decimals setting from 3 to 2
2. cancel the change when the warning dialog appears
3. setting is on 2 anyway (when leaving the settings now, everything is ok (amounts correct, still three decimals, re-openig settings shows 3 decimals))
4. change decimals to 1

Result: all amounts are multiplied by 10 (probably dependent on the specific decimals settings chosen)
Expected: all amounts remain the same