Thank you for reply and sorry for insufficient information.
I use Ghost CMS https://github.com/TryGhost/Ghost and Ghost uses own TryGhost/mobiledoc-kit based on bustle/mobiledoc-kit.
Unfortunately TryGhost/mobiledoc-kit is still based on 0.12.x (you can see in release page). I surmise that TryGhost community have some difficulty with catching up to original 0.13.x changes. There are some old dist path specifications in many Ghost code.
I once planed to patch TryGhost/mobiledoc-kit, but I guess that TryGhost/mobiledoc-kit is not only project which use 0.12.x bustle/mobiledoc-kit, so I suggest this Issue.