This is not a bug the problem is you set all layers parallax to 0,0 which mean you made them unable to scroll. A layer with its parallax set to 0, 0 will not scroll at all, so any objects placed on this layer will always stay in the same place on-screen.You should only put your UI layer to 0,0 so it doesnt move off screen. Just change all layers that arnt for UI to parallax 100,100 to fix you problem.
Check this link out too learn more on Layers and parallax https://www.scirra.com/manual/85/layers
I also recommend you read through the manual to learn more about the editor and how specific feature work https://www.scirra.com/manual/1/construct-2
also you should make your way through some tutorials(i highly recommended at least making your way though the TOP tutorials )https://www.scirra.com/tutorials/top