Help with Do not disturb

[soilentgreen]

Today I noticed that when I activate "Do not disturb", Whats up call won't mute.
It's happening with these settings:
"Allow exception"- Custom.
"Alarms"- on.
"Repeat callers"- on.
"Calls from"- none.
"Messages from"- none.
"Event/task alerts"- on.
"Reminders"- on.
"Priority app notification"- Whats up- off
"Hide visual notification"- Hide when screen is on/off- on.
The only way Whats up calls are mute is when I choose under "Allow exception"- No exception.
The reason I choose "Custom" and not "No exception" is because "Repeat callers".
There is any way to mute Whats up calls with "Allow exception"- Custom?
Thanks for the help.