Hello,
I do not see this type of problem on my AC22 version
I am working on macOS 10.13.6. Did you update your OS?
When AC crash I delete the Graphisoft .plist files from the finder in the folder library / preferences and library / application support
And then I restart AC but about your problem it seems to be more special
Perhaps it deals with your demotion to 10.12. How do you do this ?
Did you have installed AC22 before or after ?