Strange to see this, as the animation should NOT trigger a layout recalculation (transform is done on it's own "layer", is GPU accelerated and that's why it's more performant).

The article mentions "The computer is doing a lot more work and recomputing the layout of the entire page.", but it's not true. As you see in his example, the square image is getting rotated but layout of the table does not change (the image clips out the table), so no layout recalculation is done.

So the "bug", must be somewhere else?