We have concluded our investigation into the issue and found that the issue is specific to few versions of MacOS 10.14.×.
As a part of our investigation we had reached out to many of you, where many of you have confirmed that the issue gets resolved after upgrading to MacOS 10.14.5.
If you are NOT using MacOS 10.14.5 and still facing this issue, please upgrade your MacOs to 10.14.5 version.
In case you continue to face the same issue after the upgrade, you may reach out to us at firstname.lastname@example.org.
For any other problem related to packaging workflows please create a new thread.
We are closing this thread for now.
Thank you for your patience all this while.
An error occurred while saving the commentJeannie commented
I am also having this issue after updating Indesign CC 2019 and updating the Mac OS to Mojave. The application freezes in the "Packaging links (this could take several minutes) and does not go beyond that point. I have to force-quit the application.