Hi, i just uploaded a new model with a custom background as usual. At this time, the background is just black on iOS devices like iPhone or iPad. Safari and Firefox browser was tested. And it is just with this new model: [Franz von Assisi - Buy Royalty Free 3D model by noe-3d.at (@www.noe-3d.at) - Sketchfab Store]
With windows pc all working normal. I also tried to reupload the background picture.