Adobe Acrobat opens wrong PDF files on iPad I have a recurring, on-and-off problem with Adobe Acrobat (version 21.10.00) on my iPad Air 3rd generation (running iOS 13.3). I have a library of PDF files organized in folders within folders on Dropbox. Sometimes, when I double tap on one PDF file inside of Acrobat, it actually opens a different PDF, stored in a completely different Dropbox folder. If I close and reopen, I will eventually get the correct PDF to open. I then highlight the PDF as I'm reading it. When I close it, the highlights are lost. Sometimes, this happens to an entire folder. I open folder X in Acrobat to find a file, but it shows me the content of folder Y. It's like wires are getting crossed and Acrobat is creating links between PDF files that have no obvious links behind them. 95% of the time, I don't have this issue. But the remaining 5% is really annoying. What is happening?