Bug 102602 – Zooming via Cmd-+ does not correctly scale margins of list items, causing layout changes in zoom increments that are not in 50%s

• Component: Layout and Rendering
• Status: NEW

At 50%, 100%, 150%, 200%, etc the spacing between list items are correctly scaled, (and matches up with other elements). At other zoom levels however, the margins are not scaled correctly causing it to be less or more than expected depending on the zoom direction. This seems like a bug with webkit rounding the margins.

Example page where this behavior can be seen: http://thisiswhyimsane.com/

When zoomed in, the thumnails does not match up with the 'Take a look button' unless the zoom is in increments of 50%.

[Alexey Proskuryakov]

I can't see any issues on this page with r135201. Can you please upload a screenshot with problematic area highlighted?

Created attachment 175398 [details]
A screenshot of the problem demonstrated.

Here is a screen shot of the problem - left is unzoomed, right is zoomed in. It looks correct at zoom levels 100%, 150%, 200%, etc only, which I believe strongly suggests a rounding error.

[Alexey Proskuryakov]

Thank you, I see it now. This happens with Cmd+"+", not with pinch-to-zoom that I've been trying at first. 

Not a regression from Safari 6.0.2.