diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/common/typedInput.js b/packages/node_modules/@node-red/editor-client/src/js/ui/common/typedInput.js
index 7977d25f9..5072a12ca 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/common/typedInput.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/common/typedInput.js
@@ -110,6 +110,10 @@
     }
 
     function getEnvVars (obj, envVars = {}) {
+        contextKnownKeys.env = contextKnownKeys.env || {}
+        if (contextKnownKeys.env[obj.id]) {
+            return contextKnownKeys.env[obj.id]
+        }
         let parent
         if (obj.type === 'tab' || obj.type === 'subflow') {
             RED.nodes.eachConfig(function (conf) {
@@ -130,9 +134,10 @@
                 envVars[env.name] = obj
             })
         }
+        contextKnownKeys.env[obj.id] = envVars
         return envVars
     }
-    RED.pp = getEnvVars
+
     const envAutoComplete = function (val) {
         const editStack = RED.editor.getEditStack()
         if (editStack.length === 0) {