Backlight stays on

Edge 830, v5.00 firmware.

Backlight settings are auto-brightness enabled and "stays on for 15 seconds".

And yet quite often (80+% of the time) the backlight will stay on constantly. If I swipe to another page, it will sometimes switch off after 15 seconds, but not always.

If I use the Garmin Remote to switch to another page, the light generally stays on.

Am I the only one seeing this?