Chances are the light is a dual-element bulb. One of the elements will function with the parking lights and the other element is for the brakes or signals light.
Do me a favor, remove the bulb. To the best of my knowledge, it will be a 4157 part number on it. Switch it with the one on the opposite side to see if it works.
I attached a pic below showing what I mean by the dual-element.
Remove the bulb and check if that is the part number and let me know what you find.
See pic below.
Wednesday, August 10th, 2022 AT 1:00 PM