Some of my unity particles are invisible?

I am working with a particle system and have it producing particles correctly and I can see them in both scene and game view but then if I go into scene view, I see more particle outlines which aren’t appearing. For example in game view I can see 3 stars, then I go into scene view and I see 5 outlines of stars flying two of which are completely invisible? I have tried moving the z axis around and changing settings but I can’t find the problem!

I have the exact same problem, no idea what to do about it