The issue has been fixed in the latest release of InDesign – InDesign 2021.
Please update to this new version of InDesign to get the fix.
Adobe InDesign team
An error occurred while saving the commentJavier commented
Same issue here.
InDesign CC2019, version 14.03.
Mac OS X 10.14.6
The bug is present from the first version of InDesign CC2019. As others comment, I need to manually select a menu —create a new document, for example— to gain access to the keyboard shortcuts.