We've just released InDesign 17.2.1 version which addresses this issue.
Please update to this latest version using Creative Cloud Desktop application.
In case the fix does not work immediately for you, please try the following:
1) Quit InDesign.
2) Delete the following:
Relaunch InDesign & see if it works properly now.
An error occurred while saving the commentKelly Hartigan commented
Font issue is not fixed in this update!