Exporting to HTML5 brings texture and meshes issues

Hi all,
as you can see from the attached image, exporting the project to html5 brings weird texture mapping, disappearing of some meshes and the total distruction of others. Exporting the same project with the same exact settings on Windows 64bit .exe brings none of the above issues.
What do you think I am doing wrong here?

Thx
Nazzareno

i’m getting the same issues. I’ve just posted here: