Ziggs Q Disappearing

I honestly have no idea how to replicate this, but I had a Ziggs game earlier today where my bouncing bombs became invisible to me after I cast them. I can tell you the game ran pretty long (44:16), which is incredible given it was a 4v5 after our junglier afk'd, but aside from that, I have no idea what happened. I'm not sure, but I think some of my auto projectiles disappeared too.

To be clear, both my spells and autos would always go through, but I wouldn't always be able to see them. I could see the graphics of where my q would bounce, but not the projectile itself. I also don't know if it was happening for just me, or for everyone. I suppose it's possible this might have even been caused by interactions with other recently reworked mages. The enemy team had an Annie and a Zyra. That's about all I can say. Hope you can find this bug! Sorry I don't have more for you to go on, but I'll do some testing.