Created attachment 460414 [details] irregular box shadow User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Safari/605.1.15 Steps to reproduce: 1. Create a standard button. 2. Button contains a `box-shadow: inset 0 0 0 1px #808080`. 3. Load page. 4. Change browser zoom from 100% to 110%. See https://codepen.io/norfali/pen/aqbGdw for a working example. Actual results: Box-shadow isn't rendered correctly, see screenshot attached. Expected results: Box-shadow rendered correctly and works whether page zoom is 100% or 110%. Issue doesn't occur in Chrome. See also: https://bugzilla.mozilla.org/show_bug.cgi?id=1434197
<rdar://problem/96134930>