Acrobat PDF has text showing as blank squares
Hello all,
One of our users is coming across an Acrobat issue that happens across multiple documents.
When they open some PDFs in Adobe Acrobat, some of the text gets turned into blank squares. The PDF works totally fine for the user in Google Chrome, and the PDF also works totally fine for me in my instance of Adobe Acrobat.
User opening the PDF in their Acrobat:

Me opening the same PDF in my Acrobat (some info redacted for privacy):

The font appears to be Arial, so it's not a strange font that I have downloaded that the user doesn't.
I have discovered that using Save as other -> Optimized PDF produces a fixed PDF for the user. However, this is not something I need to do in my instance of Adobe Acrobat. The documents that are problematic for the user in his Acrobat work fine for me without any action.
So far, I have tried using AcroCleaner for the user, rebooting, then re-installing a fresh version of Acrobat 64 bit.
I also tried un-checking "Save As optmizes for Fast Web View" in Edit > Preferences > Documents. However, the issue persists.
Are there any other setting changes or fixes we could potentially try for this issue? Thank you!
