Created attachment 8431924 [details] testcase STR: 1. Load the testcase and turn on layer borders. 2. Scroll inside the scrollbox. 3. Notice that the moving square has a cyan border which indicates component alpha. We should pull up the white background color, but we don't because the scrollbox has a border and the border display item gets in between.
Created attachment 8431925 [details] [diff] [review] part 1: expose holes in display items
Attachment #8431925 - Flags: review?(roc)
Created attachment 8431926 [details] [diff] [review] part 2: pull through holes
Attachment #8431926 - Flags: review?(roc)
Attachment #8431925 - Flags: review?(roc) → review+
Attachment #8431926 - Flags: review?(roc) → review+
Status: ASSIGNED → RESOLVED
Last Resolved: 5 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla32
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