I had some problems because I compared the anchors in the two images, I hadn't noticed the color (also because unfortunately I have color-blindness problems but above all because I was focused on the anchor points).
Really very useful. Perhaps, rather (or in addition) than changing color to "suspicious" views, a button to apply the suggestions provided by the checking would be useful.
[It should be noted how immediate is the visual check using b4j (resizing the form by dragging the mouse), even if it is also possible with b4a, by changing the target in the Abstract Designer]