Milhouse build with modded skin problem

@Popcornmix,@Milhouse:
I respect and fully understand that you guys cannot help in support of thirth party addons, but I hope you can spare a moment to think with me:
I run clean installs of the latest Milhouse builds on both x86 and RPI2/3. I use the skin mod Estaury Mod2.
But I run into a problem pointed in this post http://forum.kodi.tv/showthread.php?tid=…pid2568244 that only happen on the RPI and not on x86.
Even when I use the Libreelec backup function and make a backup from the not functioning RPI version and restore it on a x86 the problem is gone.

Question:
Can you guys think of anything different on both platforms that can cause this (except size Wink)?