XP-L HI phosphor delamination?

[desert.snake]

When it glows, everything is ok, when I look at it in the off state, I see that part of the phosphor along the diagonal seems to have changed color. Could this be some kind of delamination? Especially noticeable in photo 2, light stripe on the left. A few days ago the color of the phosphor was quite uniform. Maybe this is due to the high power? Noctigon KR1, but I didn't find out what max current is in this driver

If it burns out or darkens, then this is not a problem, everything is easily replaced with a spare diode. I'm wondering if anyone has encountered such a change in the color of the diode surface?