Remove start date displayed on bar chart when using as Gantt

[SebastianRichter]

Dear experts,

I am creating a Gantt chart by using a bar chart in Qlik Sense.

For each part of the stacked bar I have created master items which is working just fine.

For a few dimensions however it shows xx.xx.1899 on the beginning of the x-axis (circled red) which I suppose is the start of the white bar I'm using before the start of the actual, colored bar.

I do not really understand why it shows for some dimensions and for others it doesn't.

How can I remove this date xx.xx.1899 on all dimensions in my bar chart / Gantt?

Appreciate your help. Many thanks in advance.

Regards,

Sebastian