Filter Api works only in development mode

Hello,

I'm trying to filter dates and it works as expected in developer mode (pbiviz start).

After packaging and uploading the pbiviz-file into the same report, everything seems fine, except the filter doesn't filter anything.

Here's my filter function:

private applyFilter(startDate: Date , endDate: Date): void {
        let conditions: IAdvancedFilterCondition[] = [];
        let target = this.getAdvancedFilterColumnTarget(this.dataView);
        if(startDate && endDate) {
            conditions.push({
                operator: "GreaterThan",
                value: startDate
            });
            conditions.push({
                operator: "LessThan",
                value: endDate
            });
        }

        let filter = new AdvancedFilter(target, "And", conditions);
        console.log(filter);
        this.host.applyJsonFilter(filter, "predefinedRanges", "filter", 0 );
    }

In both environments/modes the "host.applyJsonFilter" function is called without any error.

btw. I'm using the webpack setup.

I am grateful for any hint.