If we understand your issue correctly, then you were supposed to print the document through Adobe Acrobat Reader DC. However, suddenly, from Windows file explorer>File> right click> Print is opening the Acrobat Pro DC. Is that right?
We started getting a similar issue reported after the last patch was released, where Quick Print automatically opens the Acrobat or Reader in the background rather than sending the document to the printer directly.
This has already been escalated to the engineering team, who are looking for a fix on priority.
Once we have an update, we will keep you posted.
We suspect that you also have the latest version installed. Would you mind confirming the same? Open Acrobat>help>About Adobe Acrobat.