UI Element Alignment is too difficult.

[Ilorin_Lorati]

Not quite what you're looking for, but if the issue is that you're trying to align your hotbars together, I believe holding ctrl while you move the element will snap it to nearby UI elements, and shift will snap it to the grid.

I seem to remember there being a keyboard command to move them by pixel, but I can't remember what it is off the top of my head.

Edit: Selecting an element and using the numpad arrow keys will move them by pixel.