1 files changed, 5 insertions, 1 deletions
diff --git a/devtools/server/actors/page-style.js b/devtools/server/actors/page-style.js
index cfaa35ed46..1783b58a8f 100644
--- a/devtools/server/actors/page-style.js
+++ b/devtools/server/actors/page-style.js
@@ -727,9 +727,13 @@ class PageStyleActor extends Actor {
       case "::-moz-range-progress":
       case "::-moz-range-thumb":
       case "::-moz-range-track":
+      case "::slider-fill":
+      case "::slider-thumb":
+      case "::slider-track":
         return node.nodeName == "INPUT" && node.type == "range";
       default:
-        throw Error("Unhandled pseudo-element " + pseudo);
+        console.error("Unhandled pseudo-element " + pseudo);
+        return false;
     }
   }