I think it’s on they iPhone side of the house. I’m running iso 16.0.3, and that’s when it started. Hopefully Garmin and/or Apple will create a workaround or patch to correct this.
I just trieD it on my phone an it now works perfectly. I have Iphone 14 Pro Max, with upate version. Call me if you like, 352.455.0794 (mountain time).