Formatting zeroes with unit abbreviation always returns a format with the highest unit abbreviation

I want to format the value of a custom card, and the code is as follows:

let formatter = valueFormatter.create({
    format: "#,#0 €;(#,#0 €);#,#0 €",
    cultureSelector: 'it-IT',
    formatSingleValues: true,
    value: 1e9
});

let formattedValue = formatter.format(value);

The results are great when value is a non-zero number, but it shows 0bn€ when zero.
Setting value as a very low number (like 0.00000001) shows the correct 0 € format.

Since I'm using formatSingleValue: true i expect 0 to be formatted without any unit abbreviation.

Tests I've done:

formatSingleValues: true  | value 10000000 | 10M€    | OK
formatSingleValues: false | value 10000000 | 0,01bn€ | OK
formatSingleValues: true  | value 0.000001 | 0€      | OK
formatSingleValues: false | value 0.000001 | 0bn€    | OK
formatSingleValues: true  | value 0        | 0bn€    | ERROR
formatSingleValues: false | value 0        | 0bn€    | OK

Everything was tested on 4.7.0 and 4.6.0.