menu bar containing (file, edit, image) does not appear

Hello,
I work on Mac and the menu bar containing (file, edit, image) does not appear on my application.
I tried to uninstall and reinstall ImageJ but nothing changes !

Do you have a solution?
Thank you for your help

I own a Mac, too. I can see the menubar.

I also updated to MacOSX Big Sur and everything works fine.

Maybe some security restrictions?

It might be that you are using an old Java version which had a bug, see:

So try to install a newer Java version:

See also:

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thanks a lot for your help