We noticed that the drag-and-drop functionality does not work on iPads with iOS 13 and the two browsers Safari and Firefox. The drag objects cannot be moved. The drag & drop question cannot be solved. This is particularly problematic because, in our case, the learner cannot continue with e-learning. Draggin works fine on Chrome and Edge.
Hopefully the problem will be fixed in iOS 14!
I would be very grateful if someone has more information on the problem (or even a solution?).