--- a/layout/reftests/css-break/reftest.list
+++ b/layout/reftests/css-break/reftest.list
@@ -1,12 +1,12 @@
 default-preferences pref(layout.css.box-decoration-break.enabled,true)
 
 == box-decoration-break-1.html box-decoration-break-1-ref.html
-fuzzy(1,20) fuzzy-if(skiaContent,1,700) fuzzy-if(webrender,17-17,6785-6785) == box-decoration-break-with-inset-box-shadow-1.html box-decoration-break-with-inset-box-shadow-1-ref.html
+fuzzy(1,20) fuzzy-if(skiaContent,1,700) fuzzy-if(webrender,17-17,6200-6200) == box-decoration-break-with-inset-box-shadow-1.html box-decoration-break-with-inset-box-shadow-1-ref.html
 fuzzy(45,460) fuzzy-if(skiaContent,57,439) fuzzy-if(Android,57,1330) fuzzy-if(styloVsGecko,45,1410) == box-decoration-break-with-outset-box-shadow-1.html box-decoration-break-with-outset-box-shadow-1-ref.html # Bug 1386543
 random-if(!gtkWidget) == box-decoration-break-border-image.html box-decoration-break-border-image-ref.html
 == box-decoration-break-block-border-padding.html box-decoration-break-block-border-padding-ref.html
 == box-decoration-break-block-margin.html box-decoration-break-block-margin-ref.html
 fuzzy-if(!Android,1,62) fuzzy-if(Android,8,6627) == box-decoration-break-first-letter.html box-decoration-break-first-letter-ref.html #Bug 1313773
 == box-decoration-break-with-bidi.html box-decoration-break-with-bidi-ref.html
 == box-decoration-break-bug-1235152.html box-decoration-break-bug-1235152-ref.html
 == box-decoration-break-bug-1249913.html box-decoration-break-bug-1249913-ref.html

--- a/layout/reftests/transform-3d/reftest.list
+++ b/layout/reftests/transform-3d/reftest.list
@@ -31,17 +31,17 @@ fuzzy-if(winWidget,143,689) fuzzy-if(OSX
 == translate3d-1a.html translate3d-1-ref.html
 fuzzy-if(skiaContent,1,4) == matrix3d-1a.html matrix3d-1-ref.html
 == matrix3d-2a.html matrix3d-2-ref.html
 == rotate3d-1a.html rotatex-1-ref.html
 fuzzy-if(webrender,0-1,0-6) == rotate3d-2a.html rotatey-1-ref.html
 != backface-visibility-1a.html about:blank
 == backface-visibility-1b.html about:blank
 == backface-visibility-1c.html about:blank
-fuzzy-if(winWidget&&!layersGPUAccelerated,1,251) fuzzy-if(webrender,1-1,13-13) == backface-visibility-2.html backface-visibility-2-ref.html
+fuzzy-if(winWidget&&!layersGPUAccelerated,1,251) fuzzy-if(webrender,1-1,16-16) == backface-visibility-2.html backface-visibility-2-ref.html
 == backface-visibility-3.html backface-visibility-3-ref.html
 == perspective-clipping-1.html perspective-clipping-1-ref.html
 == perspective-clipping-2.html perspective-clipping-2-ref.html
 != perspective-origin-1a.html rotatex-perspective-1a.html
 fuzzy-if(webrender,0-1,0-3) == perspective-origin-1b.html perspective-origin-1a.html
 fuzzy(3,99) random-if(Android&&!browserIsRemote) == perspective-origin-2a.html perspective-origin-2-ref.html # subpixel AA, bug 732568
 fuzzy-if(winWidget&&!layersGPUAccelerated,1,61) == perspective-origin-3a.html perspective-origin-3-ref.html
 == perspective-origin-4a.html perspective-origin-4-ref.html