most of my issues cannot be replicated in a small demo.If i can replicate it using standard paper2d template i am always happy to give it to for further analysis. Unfortunately i cannot reproduce (in my limited time that i have for bug reports) so i am posting these pictures here to try and help you pinpoint cause of evil.
Another bug that emerged with latest 4.8 from git hub is :
Every new blueprint that i create does not provide a thumbnail of what is inside it . If for any reason i try to change a sprite or a flipbook from within an already created bp system keeps old thumbnail.