"Sticky" option not appearing?

I do not understand a schnitsel from the rules when “Sticky” option is appearing for buttons and when not.

Check my screen recording below. I want 2 buttons to be sticky, but the “Sticky” option is not present. If I drag the buttons to another part of the screen the sticky option does suddenly appear.
Help?

https://file.io/VLmVYTOAEgAW

@Judith,

This option available for the first component which I mean first section. So since the buttons are inside the rectangle, you should see this option for the rectangle. So this is visible for the top level component. Not sure if this a bug or it’s the normal behavior. You can keep the buttons outside the rectangle make it sticky but I guess the rectangle should be fixed too right?

Oooo that makes sense from a logic perspective, but not from a UX perspective.
Thanks so much for sharing!

That said, also found another work around; you drag the button outside of the element, make it sticky and then drag it back in. Then -somehow- the option is still available and works.