Hmm hard to say, it could be the beginning of light bleaching. It will not go away and you can't do anything to get it away. You can only place the light on a higher distance to get not more. (don't worry it have no effect on your harvest if you handle it now)
Don't cut it away, it will not have any afford (only if you keep the distance/power of the light and the hole bud is white😅)
I would just put the light higher.
Ps:
You can use the photone app to messure the umol (you can find a umol chart via Google for every stage) to find the right hanging hight or just follow the developer instructions chart.
But for me it's not a clear light bleaching, I would put the light only 5cm higher and keep an eye on it. I used the older model of the light and had the same struggle. And yes it was bleaching because this light make strong Hotspots 😂