Recent MacOS upgrade breaks syncing, Acrobat reader functionality

The recent forced upgrade for MacOS on recent MacOS versions, which moved files to a new location on the hard drive, caused problems with PDFs.  Specifically, if the file is on Dropbox, but has never been explicitly copied to the hard drive, Acrobat Reader won't open the file.  Acrobat Reader does not display an error; it simply does not open the file.  If I copy the file from Dropbox to any place on my hard drive, from then on, I can open the version on the Dropbox drive using Acrobat Reader.  This means that the new sync process doesn't work right.  I upgraded months ago, and problem has not been fixed.

 

I find the following frustrating:

1. There were repeated annoying messages urging me to upgrade Dropbox, when I had no problem with the old version.

2. The new version is worse because of the PDF problem.  I use Dropbox mainly as a way to share PDFs between my different devices, so the PDF problem is a persistant annoyance.  (From my point of view, the upgrade is a downgrade.)

3. There is no place to submit a bug report about this.  The fact that there's not makes it seem as if Dropox is not interested in supporting user experience with the product.  (Having to interact with a community wastes users' time.  I did not search the community to see if this issue has been discussed.  That's not my job.  I respect any users who are here and find it valuable, but I don't feel that what is needed in this situation is a community response.  It's a bug report.)

4. The chat support is unhelpful, and also wastes time.

5. What community category does this complaint belong in?  There are at least four that seem plausible.

 

To be clear, my frustration is not at all with Dropbox frontline support workers--I assume you exist--but with Dropbox's policies.