We have a curious case. We created a quiz with freeforms. So far so good. When previewing the slide all works fine as well. However, once previewing the entire project AND/OR when uploading to the LMS, various items of the slide diappear. We tried everything. There aren't any triggers, other than the freeform on it. The slide has no animations or anything fancy. It's just a bunch of rectangles and a bit of text.
I recreated the slides from scratch, same problem. I then recreated the slide from scratch, but on a different position in the scene. Then all items appeared.
I attached some screenshots to show the difference. In that case the white recangle in the background disappeared.
Does anybody have any idea why this could be?