Same issue. Showing 63.5 gigs used overall but only 24 gigs accounted for in storage
Mine is even worse, I have 40 gigs missing, no idea what they could be, and space vanishing daily. I'm so done with apple tablets, you have no control over them.
I have an iPad Air and it's showing I have 21 videos when I only have 2 movies and 4 podcast videos. I'm worried that if i reset my iPad I would loose my Podcasts videos.
My storage for my iOS photos app and Workflow app spiked big time and I didn't do anything. I had erased all my photos and when I went back to upload a few I got a notification that I didn't have enough space. I literally don't have a single photo on my iPad and it says 545MB used. My Workflow app storage is at 586MB and that went from about 56MB. Can anyone give me some insight?