Photos: https://photos.app.goo.gl/BvqLVYkMBB7RjaMU7 (Nexus 9 Android tablet)
My daughter's tablet is enclosed in a full-body case, so it's fairly well protected. Still, somehow, at some point I noticed these bubbles and took the case apart -- only to realize that they were not caused by a liquid spill between the cover's window and the display, but rather are within the display!
How on earth did this happen? What's going on? (And if this is not for EE, then please point me elsewhere. Not Android I'm sure, but probably not Physics either?)
I'm not really looking for a fix (unless one readily exists) mainly because the thing works fine still and is "only" a child's toy.