Keeway Klight 125 Fuel gauge blinking

[Joebasic]

Hi, I’m new to motorcycles. I bought a used keeway the other day and noticed the fuel gauge has 2 black boxes. One either side of the empty and full icon which blinks continuously. When checking the manual seemed to be reserve tank. Then after fuelling it the blinking remained instead of a solid line of boxes from either side. Unsure what’s causing it? Maybe the sender? Any advice would be appreciated See image/video below:

[Nobby the Bastard]

Have you ridden it any distance since filling up?
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[Joebasic]

[Nobby the Bastard]

Mine needs a good few miles before it will recognise the iincrease in fuel. I think it's something to do with damping out gross changes due to bumps etc.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050