PDF form won’t save content

Looks like they patched the "solution" highlighted for the thread.

I've found two other solutions. For the first one, using Chrome, navigate to url chrome://flags and enable PDF XFA support. Then open the PDF via the Chrome browser.

If the solution above doesn't work for you, the second solution it is an convoluted one that took me hours to figure out. I will tell you what worked for me on Mac.

If you don't have a printer connected to your computer, add a fake printer (aka one with dummy values like an IP address of 0.0.0.0). Not sure how to do on Windows, but for Mac, you go to Settings > Printers & Scanners > Add Printer, Scanner, or Fax... I'm sure there are tutorials on YouTube for both if needed.

Then on Adobe Acrobat, print the document to that printer. Open Terminal (Mac) or Command Prompt (Windows). Now this part if where it gets a little complicated. Enter the following command to see what print jobs have been issued:

sudo ls -lh /var/spool/cups/

You will likely be prompted for you password. After you type your password and press enter, you will see something like :

user@KW2CRGQYPL ~ % sudo ls -lh /var/spool/cups/

Password:
total 21904
-rw-------  1 root  _lp   2.1K Oct 20 21:57 c00001
-rw-------  1 root  _lp   2.4K Oct 20 22:58 c00002
drwxrwx---  9 root  _lp   288B Oct 20 23:15 cache
-rw-r-----  1 root  _lp   2.1M Oct 20 21:54 d00001-001
-rw-r-----  1 root  _lp   2.1M Oct 20 22:58 d00002-001

What you want to look for is the file that corresponds with the time that you pressed print that begins with the letter 'd.' To copy that file as a normal pdf to your desktop, enter the command:

sudo cp /var/spool/cups/d00001-001 ~/Desktop/file.pdf

Keep in mind to change the "d00001-001" value in the command above to the one that you actually want.

file.pdf should be in your Desktop folder!