The bewitchment outrage curse causes a loop with this mod, where the curse calls setTarget, and setTarget calls your addBlindnessE method, which calls isPlayerStaring, which calls the outrage check again.

https://github.com/MoriyaShiine/bewitchment/blob/7fe07ae4f95613a12132efb7f233981bc0c6b57c/src/main/java/moriyashiine/bewitchment/mixin/curse/EndermanEntityMixin.java#L34

Hello, thanks for the report! I will see what I can do