Final Draft 11 / 10 are supported on this operating system.
We tested Final Draft 9.1.2 and did not find any issues.
To ensure that you are running the current version of Final Draft, open the program, go the Help menu and click Check for Updates.
Final Draft 8 and older and Final Draft AV are not supported on this operating system. Information on upgrading to Final Draft 11 for a reduced price is HERE.