When Stage Manager is enabled then the way an external monitor works with your iPad changes. When Stage Manager is enabled and Concepts is connected to an external monitor the default behaviour is for Concepts to use the whole screen. If you want Concepts to behave as a Window with Stage Manager, here's what to do:
- Open Concepts and open any drawing
- Tap the Settings icon at the top right of the canvas
- Choose the Interaction tab
- In the "External Displays" section, toggle the switch for "Mirror Everything" to On
- Restart Concepts
We understand that this is not very intuitive. Unfortunately, Apple provide no mechanism for the app to detect that Stage Manager is enabled. The naming of the switch makes sense when Stage Manager is disabled, but not when it is enabled.