In the simulator, swipe left is usually not associated with any behavior, at least in the devices I have checked from the Fenix 7, Epix 2, Fenix 8 and Venu 3 series.
However on my physical Epix Pro Gen 2 47mm, the swipe left triggers the onNextPage() behavior. This is not in line with the use of swipe left in the native apps, where swipe left is used to call up lower level, detail views, and only swipe up/down are used to switch between pages on the same level.
So, either there is a but on the device, and swipe left should not trigger onNextPage(), or if this is intended (contrary to native app behavior), then there is a bug in the simulator, because there swipe left is not associated with the onNextPage() behavior.