Is there a way to prevent the screen from turning on while making or receiving a call via bluetooth?

[AC Question]

I've googled this and found similar problems but the posts are all outdated.

I currently use a Samsung Gear S3 with my Galaxy 7. I use my watch to make and receive calls and my phone stays in my pocket. Not an unusual setup, right?

Here's the problem:

Whenever I make or receive said calls, the phone screen turns on in my pocket and I usually end up ending the call, muting it, or turning the bluetooth off. I would like to know if there is a way I can prevent this from happening.

Things I've already tried:

Using the "Keep screen turned off" feature. That feature should be listed as "Keep screen turned off except while making or receiving calls". Plus it prevents the "Find my phone" feature of my Gear S3 from working.

Installing Llama and creating events as a work-around. I have had mixed and inconsistent results with this. It has proven to be unreliable.

Pressing the lock button every time I make or receive a call with the watch. While being the most affective, this completely defeats the point of the watch and is an unacceptable solution.

Thanks in advance for any assistance in this matter.