E-Max 110s scooter

hi all my sons e-max 110s scooter i have just noticed that the rear break light keeps on.
there is no other fault just rear light keeping on side light comes on the front and so does the
dip and main beam aswell . but the rear tail light keeps on as well the break light they are both the same filliment bulb i have taken this bulb out
and and turned it around/ twisted the bulb and the light comes on dull
and is not meant to go this was and the rear brake light doesn.t come on i carnt seem to find any obvious faults ??