The issue has been fixed in the latest release of InDesign – InDesign 2021. The fix was also available in the previous version of InDesign – version 15.1.2
Please update to either of these versions of InDesign to get the fix.
Adobe InDesign team
An error occurred while saving the commentAnonymous commented
Is there a bug fix coming for the variable font issue? Tools like InDesign not running the variable font feature properly renders them useless — looks like this has been requested for a while but it's a massive issue in using variable fonts.