UIAspectRatioConstraint Problem

I’ve finished a UI but noticed that UIAspectRatioConstraint acts abnormally.
Whilst changing the size of screen I noticed that the position is also being changed and UIAspectRatioConstraint seems to be causing it.

UIAspectRatioConstraint Properties.
UI.

Demonstration.

I’m only using Scale to resize and position the UI.
I’m only using one UIAspectRatioConstraint per mainframe.
I tried changing the Mainframe’s anchor point to (1, 0) and it just moved the whole UI off the screen.

Seems like I’m missing something obvious, help me out.