Ai suggests this. See if it helps...
In Debut's options, there is a checkbox for "Minimize debut window when recording if it is covering the recording selection"
This setting is likely enabled by default in the latest version.
To potentially resolve this issue and regain the functionality you're looking for, you could try the following:
Open Debut and go to Options/Record settings.
Look for the option "Minimize debut window when recording if it is covering the recording selection" and uncheck it.
Also, ensure that "Disable preview when recording in screen capture" is unchecked