Thanks for using Adobe Acrobat DC. Really sorry about the problem you are facing. We will investigate it on priority. Can you please help us with following information so that we can proceed with the investigations:
1) Can you please provide the version of Acrobat. (Click on ‘Help’ in menu bar > click on ‘About Adobe Acrobat DC…’ > take a snapshot of popped window).
2) Can you please share the Exact steps of the issue you are facing? If possible can you please share a video.
I believe after opening a pdf file you are facing some problem when trying to save the file locally.
Can you please share more about what you are trying to accomplish, including the exact steps you used to use and the steps you are trying now? We have not changed the ability to save to Local. In fact, whenever you do an "Copy to Acrobat" from another application like email, that stores the file in "Local". Subsequently, such files show up in the Files app as well as in the "On My Phone" sections of the locations switcher when adding email attachments. We've never had a way to copy a file from Document Cloud to Local. This has been a fairly common request that we've considered in the past, but we've always felt it creates confusion by adding yet another copy of the file available through the files app.