Backlight is always ON during running activity

I've made a few night runs and have noticed that backlight is always ON even though my setting is:
A. backlight | during activity | gesture | after sunset

So there is 2 options:
- settings are not taken into account
- gesture is too sensitive.

when setting is:
B. backlight | during activity | gesture | off
backlight is all the time is off - OK

f6p 24.10