Compass/bearing functionality in the Explore iOS app is awful. Blue triangle icon will rotate to indicate heading at times, and at others will be fixed in some random direction. GPS tracking works.
Apple Compass app works flawlessly, Apple Maps bearing works flawlessly, onX Hunt bearing works flawlessly, PaddleWays bearing works flawlessly. If I force quit Explore and restart it will sometimes work for a short period of time.
I have tried reinstalling the Explore app. Explore has all relevant permissions granted. iPhone 16 Pro, latest iOS 18. This behavior also happened on my previous iPhone 11.