I have a fix for this. Go to settings-> Appsand notifications -> App permissions -> Telephone permissions
After going here disable galaxy wearable permission. Then try re connecting your watch. Now you get notifications on watch and if you address them on the phone it will automatically set to phone. When you answer in the watch it will automatically be set to Bluetooth. Job done.
Hope this helps
Cheers
This DOES NOT work. At least on S10+, there is no "telephone permissions", there is "phone" which is the phone app itself. If you go to the Galaxy Wearable app in the permissions and toggle off the Phone permission, it will simply tell you that you can't use the galaxy watch any more until permissions is fixed.
My problem is similar to others in this thread but a little different. If I have my Galaxy Watch connected, and I turn on my bluetooth headset, in the bluetooth menu my watch will be set for "calls" and my headset will only be set to "media" and it will not allow me to move the slider to the on position for calls. I can fix this by unpairing the watch and the headset, then pair the headset and it will default to "calls and audio(which is what it should ALWAYS do), then I connect my watch, and it will also show "calls" in the bluetooth menu, but if I answer a call on the watch, it will send the audio to the headset, which is ABSOLUTELY how it should work.. However, then if I turn my headset off and back on, it go back to showing only media audio in the bluetooth menu and won't let me turn on calls, forcing me to unpair and repair both devices. This is EXTREMELY annoying on my headset(Sennheiser Presence) which is made to easily turn on and off, end/answer calls, etc. by sliding the mic boom, which now doesn't work. Really hoping someone has a working fix for this.