Backlight bug

Forerunner 55, firmware: v10.01, GPS: v4.13, CIQ: v3.4.2, WHR: v5.02.00, ANT/BLE : v2.01, Sensor Hub: v24.13

When you press the "Down" button of the widgets, the backlight lights up, although it is disabled everywhere in the settings. This problem has been present for a long time, is it going to be fixed?
Factory reset does not work.