Button not showing in Vertical Box

I am trying to make a Main Menu screen and have “Main Menu” and multiple buttons in a vertical box.
The text is visible and works fine, however the buttons don’t. They are skinny and if i try to change their Y axis size, nothing happens.

This is what it looks like with only one button
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What should I do?

Can you upload the image again, something seems to have gone wrong there.

These buttons sit in a vertical box:

With the above settings, the buttons will conform to the size of the vertical box, as in:

Image from Gyazo


If you need them to behave in some other specific way, we’ll need more details.

Thank You!