I've been fighting for a while with a bug where the black orbs from time to time becomes invisible. I've been in contact with the 3rd party developers who made the plugin I'm using, but no solution has yet been found.
At first I thought it was an obscure problem only appearing on macs - but it seems like a few players are experiencing it all the time on all platforms - which makes the issue a lot more alarming.
I've now scrapped the 3rd party plugin and built a variation of the orb natively in Unity. Hopefully this will eliminate any problems. The patch is now live.
Thank you!
//Niklas