diff --git a/src/components/formFields/diffCode/index.tsx b/src/components/formFields/diffCode/index.tsx
index eea5d6f1114aa0573612d5e6b0c1598e8592f228..b497fc25f59da7cb4500ba5da725e7d810dbbbfa 100644
--- a/src/components/formFields/diffCode/index.tsx
+++ b/src/components/formFields/diffCode/index.tsx
@@ -72,6 +72,7 @@ export default class DiffCodeField extends Field<DiffCodeFieldConfig, IDiffCodeF
   }
 
   keydownCallback = (e: KeyboardEvent) => {
+    e.stopPropagation()
     const keyCode = e.keyCode || e.which || e.charCode
     const ctrlKey = e.ctrlKey || e.metaKey
     if (this.props.config.fullScreen) {