Created attachment 575753 [details] testcase.html User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a1) Gecko/20111120 Firefox/11.0a1 Build ID: 20111120031001 Steps to reproduce: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a1) Gecko/20111120 Firefox/11.0a1 Wrote a simple testcase with: 1. a -moz-transform acting twice on the same element 2. Limiting the width of this element (by width or position:absolute) 3. Applied box-shadow Actual results: A small white line appeared between the box shadow and the element Expected results: No white line between the element and box shadow, like Opera and Chrome
Created attachment 575754 [details] Testcase as text/html
Attachment #575753 - Attachment is obsolete: true
Created attachment 575755 [details] Screen shot of issue Screen shot of the problem. Somehow i was unable to upload the testcase as text/html..
Attachment #575754 - Attachment mime type: text/plain → text/html
Component: Layout: Block and Inline → Layout: View Rendering
QA Contact: layout.block-and-inline → layout.view-rendering
Created attachment 575873 [details] Simplified testcase Simplified the testcase. Seems to be depended on the width of the window (resizing the window can make the bug appear / disappear) Furthermore, it seems that centering the element causes it. (margin: auto or <center>). The transform:scale factor does not seem to have any influence next to showing the bug in the first place.
Attachment #575754 - Attachment is obsolete: true
Attachment #575873 - Attachment mime type: text/plain → text/html
Created attachment 576430 [details] Beter testcase Even beter testcase, showing that the bug also appears in the height. Seems to be dependend on percentage margin calculation, as with pixel based marging it works
Attachment #575873 - Attachment is obsolete: true
I've come across this as well, with maybe a slightly simpler use-case. See this jsfiddle: http://jsfiddle.net/2cSmS/1/ It happens with just a box-shadow and transform:scale - but it seems to depend on the width of the element and the amount that it is scaled.
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