diff --git a/src/containers/blocks.jsx b/src/containers/blocks.jsx
index b275b463f6cfaf868e03befa4699a017b2581d80..4141e6cc87a8e3e23ff8313fd270f1850b70329d 100644
--- a/src/containers/blocks.jsx
+++ b/src/containers/blocks.jsx
@@ -125,6 +125,8 @@ class Blocks extends React.Component {
         if (this.props.isVisible) { // Scripts tab
             this.workspace.setVisible(true);
             this.props.vm.refreshWorkspace();
+            // Re-enable toolbox refreshes without causing one. See #updateToolbox for more info.
+            this.workspace.toolboxRefreshEnabled_ = true;
             window.dispatchEvent(new Event('resize'));
         } else {
             this.workspace.setVisible(false);