Just posting this simple bug so someone can handle it accordingly if they have the time.
If you rotate a GUI object (in this case, an ImageButton) and try to use the on-screen UI editor, the object will not scale properly.
Here’s an example of what happens with an ImageButton with Rotation set to 0:
https://gyazo.com/19a44789d702337209f9e988f2b5fce0
And now with Rotation set to 90:
https://gyazo.com/8116ee6af1d9ee428278166a34139843
Hopefully this can be sorted out so I can make even more use of the on-screen UI editor 
Thanks,
korky5000