Hi Blake,
Great job finding oddities. Keep up the good work.
The key to the movement oddity is in the width and heigth of the morph. The etoy x and y of the morph are the center or nearly the center. Which means that when the morph has an odd width or in this case heigth either the corner or the center will not be on an integer boundry. World's mouse x and mouse y are the cursor point. And that is always integer. Obviously, somehow, this is causing the inequality to fail after the morph has been moved. And so it will adjust one way at one tick and the other way at the next.
If there are an even number of ticks. It will bobble twice as much but end up in the same place each time its displayed. We don't see it.
A work around is to adjust your morphs width and height so that they are both even and then the morph will be rock steady when it gets to the cursor point.
A good way to demostrate the relationship would be to use a ruler morph as the test morph. And try it with different heights and widths.
Yours in service, -- Jerome Peace
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