I've got a weird problem with Photos App, either on iPhone and iPad. I have all my photos on iCloud. On both my iPhone and iPad, I checked "Download and keep originals", in order to keep everything on the device. That is working correctly with photos, but not videos !
For example, if I take a short video with my iPhone, it appears a little bit later on the iPad thanks to iCloud synchronization. I can read the video on the iPad, but as soon as I turn airplane mode ON, I can't read it anymore.
This is not a storage problem as I have a lot, and I even reset completely the device, but still got the problem. Updating to Catalina and iOS 13 didn't fix the problem too.
Apple support admits the problem, but they are not able to solve it for months...
Does anyone experience the same problem or has an idea ?