diff --git a/layout/reftests/css-break/reftest.list b/layout/reftests/css-break/reftest.list
index 54cfbcbbeefc..7a5f3adc4476 100644
--- a/layout/reftests/css-break/reftest.list
+++ b/layout/reftests/css-break/reftest.list
@@ -2,7 +2,7 @@ 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,4-4,3273-3273) == box-decoration-break-with-inset-box-shadow-1.html box-decoration-break-with-inset-box-shadow-1-ref.html
-fuzzy(16,460) fuzzy-if(Android,10,3673) fuzzy-if(skiaContent,57,374) fuzzy-if(styloVsGecko,1,420) == box-decoration-break-with-outset-box-shadow-1.html box-decoration-break-with-outset-box-shadow-1-ref.html # Bug 1386543
+fuzzy(16,460) fuzzy-if(Android,10,3673) fuzzy-if(skiaContent,57,374) fuzzy-if(styloVsGecko,2,1410) == box-decoration-break-with-outset-box-shadow-1.html box-decoration-break-with-outset-box-shadow-1-ref.html # Bug 1386543
 random-if(!gtkWidget) HTTP(..) == 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
diff --git a/layout/reftests/table-background/reftest.list b/layout/reftests/table-background/reftest.list
index df2f629d0d7f..e35e9e164990 100644
--- a/layout/reftests/table-background/reftest.list
+++ b/layout/reftests/table-background/reftest.list
@@ -3,14 +3,14 @@
 fuzzy-if(styloVsGecko,5,330) != backgr_border-table-column-group.html empty.html # Bug 1386543
 # This seems to be caused by bug 527825
 fuzzy-if(styloVsGecko,5,561) asserts-if(gtkWidget,0-12) != backgr_border-table-column.html empty.html # Bug 1386543
-asserts-if(gtkWidget,0-6) != backgr_border-table-quirks.html empty.html
+asserts-if(gtkWidget,0-6) fuzzy-if(styloVsGecko&&winWidget,32,88) != backgr_border-table-quirks.html empty.html
 fuzzy-if(styloVsGecko,1,168) != backgr_border-table-row-group.html empty.html # Bug 1386543
-fuzzy-if(styloVsGecko,1,168) != backgr_border-table-row.html empty.html # Bug 1386543
+fuzzy-if(styloVsGecko,1,178) != backgr_border-table-row.html empty.html # Bug 1386543
 != backgr_border-table.html empty.html
 != backgr_fixed-bg.html empty.html
 != backgr_index.html empty.html
 != backgr_layers-hide.html empty.html
-!= backgr_layers-opacity.html empty.html
+fuzzy-if(styloVsGecko&&cocoaWidget,1,56781) != backgr_layers-opacity.html empty.html
 != backgr_layers-show.html empty.html
 != backgr_position-table-cell.html empty.html
 != backgr_position-table-column-group.html empty.html