Hello 
So I just updated from 4.7 to 4.8 and I have witnessed one of the most funny bugs ever. Basically, some time ago(before updating) I have created a simple actor blueprint called ‘Rocket Launcher’. Here’s its thumbnail(so you see what it looks like):
Yep, a box and three simple rockets. And here’s what happened to all my actor blueprints:
Haha, the rocket launcher appears on every single thumbnail, even though it’s not related to those blueprints at all. 
Note that it only messed with thumbnails, when i open the blueprint viewport, rockets ain’t there. The game works good as well. So… I have no idea what happened, but it’s nearly as funny as disturbing.
