Calls on other devices won’t disable.

Yes! Thanks to a suggestion on another thread, I tried the following and it worked. Go to Settings -> Phone -> Calls on Other Devices, and instead of turning it off, turn it ON but disable specific devices, and reboot. It's crazy but it works. Here's a screenshot of my phone:

You need to reboot the iPhone, not the iMac. Sorry that wasn't clear.

Same here, and it's driving me nuts. Hitting 'speaker' no longer goes to speaker, it gives me a menu of options, and I NEVER want my laptop. I want the speaker! Disabling this feature worked until recently. I'm on iPhone XS Max, iOS 12.4, Verizon.

Me too. Additionally my iMac pesters me daily to say I can use wi-fi calling directly on my Mac, which is always "Not Now" with no choice for "Never" or "Stop nagging me".

I have "Wi-Fi Calling" toggled to ON on the phone because I use T-Mobile and the coverage isn't as good as I'd like. "Calls on Other Devices" is a separate toggle, which I have toggled OFF but shows up as ON.

Alas it did not help, @floodflash. It seemed like a good idea. I tried turning the switches ON Athen OFF for all my devices, tried rebooting my iMac a couple times. Each reboot had the same sad nag.

This is a bug, clearly.

Did you ever figure this out? I want my phone to stop ringing on my computer, but even when I disable "Allow Calls on Other Devices" it still appears as "On" from the settings menu. Please help!

Frustrating. I'm chatting with Apple support now. I can get them not to show up on my iPad, but nothing I try stops them from going through to my laptop.

I have the exact same problem.