new file mode 100644
--- /dev/null
+++ b/gfx/tests/crashtests/1615141.html
@@ -0,0 +1,13 @@
+<style>
+#a {
+  outline: solid;
+  mix-blend-mode: difference;
+}
+:not(animateTransform),
+feDiffuseLighting:nth-last-of-type(2) {
+  -webkit-transform-style: preserve-3d;
+  transform: translate3d(7px, 6px, 6px);
+  -webkit-perspective: 1px;
+</style>
+<ol id="a">
+

--- a/gfx/tests/crashtests/crashtests.list
+++ b/gfx/tests/crashtests/crashtests.list
@@ -182,8 +182,10 @@ load 1509123.html
 load 1494062-blob-image-wraplist-clip.html
 load texture-allocator-zero-region.html
 load 1524418.html
 pref(layout.css.individual-transform.enabled,true) load 1529149.html
 load 1541113.html
 pref(layout.css.individual-transform.enabled,true) load 1547169.html
 load 1535657.html
 load 1566206.html
+load 1615141.html
+

--- a/gfx/wr/webrender/src/picture.rs
+++ b/gfx/wr/webrender/src/picture.rs
@@ -2536,20 +2536,27 @@ impl TileCacheInstance {
 
                 let map_local_to_surface = SpaceMapper::new_with_target(
                     surface.surface_spatial_node_index,
                     current_spatial_node_index,
                     surface.rect,
                     frame_context.spatial_tree,
                 );
 
-                current_pic_clip_rect = map_local_to_surface
-                    .map(&current_pic_clip_rect)
-                    .expect("bug: unable to map")
-                    .inflate(surface.inflation_factor, surface.inflation_factor);
+                // Map the rect into the parent surface, and inflate if this surface requires
+                // it. If the rect can't be mapping (e.g. due to an invalid transform) then
+                // just bail out from the dependencies and cull this primitive.
+                current_pic_clip_rect = match map_local_to_surface.map(&current_pic_clip_rect) {
+                    Some(rect) => {
+                        rect.inflate(surface.inflation_factor, surface.inflation_factor)
+                    }
+                    None => {
+                        return false;
+                    }
+                };
 
                 current_spatial_node_index = surface.surface_spatial_node_index;
             }
 
             current_pic_clip_rect
         };
 
         // Get the tile coordinates in the picture space.