When setting the country to Switzerland and entering a phone number with country code, the adult member’s phone number is displayed with the wrong formatting, The formatting issue is visible when you go into the troop roster and click on the leader. You will see their details in the upper left of the screen with their address and email address.
So, for a Swiss phone number
[+][country code][area code][phone number]
[+]  
Instead, what we see is:
(417) 912-3456 x7
as if the area code was 417 and there was an extension x7
At least all the numbers are there.
It’s also possible to have a French or German mobile number for our scouters even though they’re a member of our Swiss based BSA troop.
It will be difficult to validate - perhaps don’t try to format the number especially since the input isn’t validated anyway. The “+” is being stripped out of the phone number once we click “save” without any warning. It is very nice to be able to enter complete phone numbers for our scouters.