Gear VR - All lighting vanishes when I look at an object

Hi,

I’ve been doing a line trace to simply make hidden text appear above an object when I look at it. Basically, the line cast fires, it detects it hits the BP Actor, and the hidden text shows. This is OK on PC, however on the GearVR, after the visibility of the text is switched to on, and I look away, everything goes dark. Not pitch black, its like all the lights get turned out. If it look back past a certain point, everything turns on again. I have no idea what’s causing this. Any ideas?

Thank you so much for any help. I’ve taken a day of annual leave from work today to figure this out on my project and so far my entire morning as yielded no further progress

Attached are my BP classes: