Fix for this issue is now available in the latest update of InDesign 2020 – that is, InDesign 15.0.1
In the Creative Cloud Desktop application, click on the Updates section on the left. You should be able to see the Update available for InDesign. Please update your InDesign application to this version to try out the fix.
Let us know in the comments section if you face any problem with the updation process.
Adobe InDesign TeamAlex commented
Same issue! It's very frustrating, hopefully it's a quick fix to sort....
Hi All, this feature is now available in the latest version of InDesign i.e. InDesign 13.1
Kindly update InDesign to get access to this feature.
The ability to save out pdfs as single pages would be a great addition!