Hi,
Adobe Acrobat Reader DC removes Finder's "Tags" and "Date Last Opened" if you save an edited PDF after removing "Text Highlight".
The following procedure can replicate the bug:
- Download and open a PDF file such as this from Adobe’s website: https://learndownload.adobe.com/pub/learn/acrobat/edit-text-images-pdf-files.zip
- In the macOS Finder, assign a Tag and open the file.
- Go back to finder and check the Tag and the Date Last Opened
- Go back to the pdf, highlight a line and save the file (first save).
- Remove the highlighted text and save the file again (second save).
- Now go to the Finder, the "Tag" and the "Date Last Opened" is gone.
I am on macOS Catalina version 10.15.6 and Adobe Acrobat Reader DC Build: 20.12.20043.396433.
Really annoying …