When exporting out artwork for app icons, the dimensions have to be precise. 256 x 257 isn't going to work downstream and you have to adjust and export out again - wasting time.

If an art board bounds is not pixel perfect aligned the exported graphics can be one pixel out. So it becomes necessary to align both content and art boards.

One could argue that if an art board has a defined integer dimension, then it should be guaranteed to be exactly that dimension. Which could be a bug.

But why is it necessary to have an art board that is not perfectly aligned to pixel boundaries? - that just causes headaches in general since the content will be misaligned (unless there is an exact half pixel requirement).

However, the process to align art boards to pixel perfect x and y values becomes important.

Visually you want your template to look great as well. So aligning the art boards helps.

However, when you align with a distribution that is evenly spaced the objects move from the pixel perfect positions.

So the suggestion would be to have a check box against alignment methods to maintain pixel perfect integer values. (Or a check box in the hamburger menu).