CCSTUDIO-THEIA: Cannot change project settings

Part Number: CCSTUDIO-THEIA

I have been unable to change project settings in CCS. For example, I open up project properties, go to the compiler and change the optimization from level 2 to level 0. But when I click "Save and Close" nothing happens.

If I close the dialog by clicking the X in the corner of the dialog, nothing changes.

The only way I've found to change settings is to change my .projectspec file and reimport the project.

Is this a known bug in CCSv20.5.0 and 20.5.1. I've tried this with different targets and different settings with similar results.

Thanks,
Scott