Making a phone call directly without starting default app

[mass]

DW Contacts 3.1.2.1
Android 9

Hello,

I have this issue since many Android Versions, Roms and devices.
DW Contacts is already my default dialer application. But pressing on a call button of a number always opens the default dialer app with the number pasted, and I need to press dial button there again.
The same happes, when I manually enter a new number in the DW Contacts dialer, then it starts the default app with that number.

How can I make DW-Contacts directly starting the phone call?