Amazfit Watch faces

Hi,

when the watch is locked and I turn my wrist to turn on the backlight - it is not the brightess level I set. When I unlock the watch, the brightess goes up to the preset value, but when watch is locked I get something around "3" or less. Is that normal behavior or is just mine?

So I can not setup the brightness level for the backlight of locked watch?

Thank you for any tips.

Regards,
J.