drag-drop question onto image doesn't load on mobile in moodle 3.5

I recently did the upgrade to moodle 3.5. I already noticed in the web app of the mobile version that the image in the first course in the quiz about the river tames doesn't appear. I tried several times over several days. After the upgrade now the same thing happens on my mobile version on my own moodle installation. I changed nothing except the upgrade from 3.4 to 3.5.