What is missing, or at least I have not been able to find it in the new release, is the previous setting to automatically check for updates when you open MindManager.
I received this e-mail with link:
Thank you for contacting Mindjet Support.
Please ensure you have installed the latest update for MindManager 12 Mac:
This should ensure compatibility with OS X Catalina.
If you need further assistance, simply reply to this email or give us a call.
Mindjet, Corel Corporation"
Perhaps it can be of any help, but make sure that this update seems to be meant for MM 12 Mac!
We have also released an update for MindManager 11 for Mac that is compatible macOS Catalina. You can either use the 'Check for Updates' function within the product under the Help menu or use this link to download -