diff --git a/core/css.ts b/core/css.ts
index c7443e5f0..d0e067041 100644
--- a/core/css.ts
+++ b/core/css.ts
@@ -353,6 +353,7 @@ input[type=number] {
 
 .blocklyScrollbarBackground {
   opacity: 0;
+  pointer-events: none;
 }
 
 .blocklyScrollbarHandle {