Phone numbers clickable with Error message

When I try clicking a phone number on the mobile version of my website, I get an error message:
“This website has been blocked from automatically starting a call”.
IGNORE or ALLOW CALL

Could this be some security “feature” of my webserver?
Any suggestions welcome.
Thanks, all,
Dave

It’s a browser feature that “learns” what to do. When you are testing your site you click the phone number and then cancel, because you’re just testing. Safari learns you don’t actually want to call and shows that message.

Thanks, Duncan, as always.
So…as the old saying goes, “It’s not a bug but a feature!”
Dave