I have audio prompts to activate every Lap and Pace or Speed Alerts ON on my Forerunner 630. Since a few days I do not only get the correct LAP and average Pace announced, instead I hear a second alert always with LAP 8 and the same average pace.
When I switch of the Pace or Speed Alerts OFF only one alert is coming as I would expect.
My phone is a iPhone 6 Plus with iOS 12.3.1