LensFlare blackout in Fusion Studio

Hi,
BG node and S_LensFlare, Hotspot (x,y = -1.001, 0.5) is fine. But x,y = -1.002, 0.5 suddenly goes black. Not completely black, but almost black. Very strange. I wonder why.

x,y = -1.001, 0.5


x,y = -1.002, 0.5

Fusion Studio 8.01 Sapphire 2022.04 windows10