I’m added the skeletal mesh of this rifle asset to one of my blueprints and am now seeing it in the preview window of every single asset?
but if I open the asset itself it’s not in any of them? umm?
Hello NineHydras -
We are currently tracking this issue as UE-17453. I have added your information to the report and we will keep you informed as we continue investigating a solution.
Thank You
Any updates on this issue? I just converted my project from 4.10.1 to 4.12.4 and it’s still occuring. As you can see on screenshot it looks pretty messy 
Difference I have between original issue is that any bluepritnt can “merge” into any blueprint icon. I didn’t see it with skeletal meshes.
Hello hamsterPL,
After doing some digging I found that there is a similar and more recent issue to what you are reporting (UE-32911). This issue has been reported to the developers for further consideration. I believe that this is the issue that you are experiencing. I will provide updates with any pertinent information as it becomes available. Thank you for your information and time.
Make it a great day