Scrollbars not showing

I have an 开发者_开发技巧Image Widget inside of a ScrolledWindow widget. The image's Show Scrollbars Property is checked, and still, when I launch the application, the scrollbars are not shown.

More info: The image is indeed bigger then the form. ScrolledWindow's scrollbars policy is always.

What can I do?

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I don't what happened, I rebuilt the GUI and it worked. I'm afraid to touch it :D.

Thank you to all who tried to help me.