Commits on Jul 10, 2018

1. Don't segment using clips with different positioning nodes …

   When segmenting brushes, don't consider clips if they have a different
   positioning node. The issue here is that since they have a different
   positioning node, the segmentation results may change during scrolling.
   This means that we would need to invalidate the cache result and
   re-segment. We can do that in the future, but in the meantime this fixes
   the rendering issues the bug causes.
   
   Unfortunately, this bug is triggered by rendering, scrolling, and then
   re-rendering, so it is tricky to make a test for it.
   
   Original bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1446626

   

   mrobinson committed Jul 10, 2018

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