Pixel Perfection unity UI

Hi guys, I'm having an issue with achieving pixel perfection with Unity UI. The screenshot demonstrates 2 RectTransforms with an Image component. They are shown in the scene view as 2 black linkes. Both of them have a height of 2, while appearing that their height is different. The Canvas containing them is set to PixelPerfect, and has a Scaler that matches width. The effect becomes even more visible when the elements are moving on screen, especially on low res screens.