Qt offline installer that is generated via Qt Online installer GUI requires signing on MacOS

Qt user reported that they generated offline installer via Qt Online installers GUI and had to sign it themselves:

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I'm getting a crash when trying to start an offline installer I created. Seems the installer is not signed correctly. I did the following:

• Download qt-online-installer-macOS-x64-4.8.1.dmg (It states it's intended for macOS (Apple Silicon/Intel))
• Use it to create an offline installer including iOS, Android and a couple of additional libraries
• Start the created offline installer

Running macOs Sequoia 15.3.1 on Apple M1

After signing the app myself I can start it. I did the same with older versions in the past. If I remember correctly I didn't have to sign those.

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If signing is requirement that the user needs to do then the Online installer generation process should instruct about this?