I use Android Studio on macOS in full screen (maximised). When launching the Android Emulator, its window is shown on the regular desktop. This requires switching from one windo
I also looked into this and there doesn't seem to be any support for this. Perhaps you could write a plugin that somehow wraps an external window inside a panel, I don't know if the IntelliJ API supports it though.
The closest thing you got on macOS is the split-screen mode with full-screen apps.