I just got my Garmin instinct 3 solar 45mm this week. The activity paused without intervention. This happened almost every time when I record an activity.
To make sure I did not accidentally press the button, the "Lock Screen" is ALWAYS ON and the "auto pause" is OFF.
The figure here shows my recent activities to demonstrate the problem. The A and B are the activity recorded by Instinct and Instinct 3 Solar (firmware 5.19), respectively, of same route. The orange circle indicates where the activity was paused. I resumed the recording when I noticed the watch paused the recording. The C is the latest activity with updated firmware (6.28), and the activity was paused at the orange circle.
There were prompted messages saying that all the connected sensors, including the GPS, HR sensor and speed sensor, were reconnected just after the pause event happened.
Any suggestions are welcome.