Pixel preview is not aligned with non-pixel preview
I make icons sometimes. I need to check them for pixel-perfection using cmd opt y (pixel preview). When I do that, I expect (and I believe Illustrator used to work this way) that the preview remains in the same place at the same scale so that I can meaningful toggle in and out of pixel preview to compare the vector shape with the pixel result. But when I do this using the keyboard shortcut noted above, the artwork jumps up and down both in scale and location on the screen. The repro steps are simple:
1. Create a shape that is relatively small (say 16x16 pixels), perhaps with some strokes
2. Zoom in to see the shape up close
3. Hold down cmd and option (on a mac) and then press the y key repeatedly.
Observe the result: the artwork jumps around.
Expected result: it should stay in the same place.
Jason Canning commented
I have a similar issue and I use 'Actual Size' to preview my icon, but when I do this, the exported icon is not pixel perfect as it looks on-screen in Illustrator. However, if I zoom to 'Actual Size' then toggle on/off pixel preview it shows the icon I have drawn correctly as it would be exported. AN annoying bug when creating icons having to toggle pixel preview on/off each time.
I believe I have the same issue but my view is zoomed. However, the zoom level is the same as you can see in the screenshot.