diff --git a/packages/node_modules/@node-red/editor-client/locales/en-US/editor.json b/packages/node_modules/@node-red/editor-client/locales/en-US/editor.json
index 92f5fc483..095043cb5 100644
--- a/packages/node_modules/@node-red/editor-client/locales/en-US/editor.json
+++ b/packages/node_modules/@node-red/editor-client/locales/en-US/editor.json
@@ -699,7 +699,10 @@
             "triggerAction": "Trigger action",
             "find": "Find in workspace",
             "copyItemUrl": "Copy item url",
-	    "copyURL2Clipboard": "Copied url to clipboard"
+	    "copyURL2Clipboard": "Copied url to clipboard",
+            "showFlow": "Show",
+            "hideFlow": "Hide",
+            "find": "Find in workspace"
         },
         "help": {
             "name": "Help",
diff --git a/packages/node_modules/@node-red/editor-client/locales/ja/editor.json b/packages/node_modules/@node-red/editor-client/locales/ja/editor.json
index 8e8a914aa..c761a6150 100644
--- a/packages/node_modules/@node-red/editor-client/locales/ja/editor.json
+++ b/packages/node_modules/@node-red/editor-client/locales/ja/editor.json
@@ -699,7 +699,10 @@
             "triggerAction": "アクションを実行",
             "find": "ワークスペース内を検索",
             "copyItemUrl": "要素のURLをコピー",
-            "copyURL2Clipboard": "URLをクリップボードにコピーしました"
+            "copyURL2Clipboard": "URLをクリップボードにコピーしました",
+            "showFlow": "表示",
+            "hideFlow": "非表示",
+            "find": "ワークスペース内を検索"
         },
         "help": {
             "name": "ヘルプ",
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/tab-info-outliner.js b/packages/node_modules/@node-red/editor-client/src/js/ui/tab-info-outliner.js
index d398cc2d0..7f2ed78be 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/tab-info-outliner.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/tab-info-outliner.js
@@ -135,6 +135,10 @@ RED.sidebar.info.outliner = (function() {
                     RED.workspaces.show(n.id, null, true);
                 }
             });
+            RED.popover.tooltip(toggleVisibleButton, function () {
+                var isHidden = !div.hasClass("red-ui-info-outline-item-hidden");
+                return RED._("sidebar.info." + (isHidden ? "hideFlow" : "showFlow"));
+            });
         }
         if (n.type !== 'subflow') {
             var toggleButton = $('<button type="button" class="red-ui-info-outline-item-control-disable red-ui-button red-ui-button-small"><i class="fa fa-circle-thin"></i><i class="fa fa-ban"></i></button>').appendTo(controls).on("click",function(evt) {
@@ -633,6 +637,9 @@ RED.sidebar.info.outliner = (function() {
                 objects[n.id].children = missingParents[n.id];
                 delete missingParents[n.id]
             }
+            if (objects[n.id].children.length === 0) {
+                objects[n.id].children.push(getEmptyItem(n.id));
+            }
         }
         var parent = n.g||n.z||"__global__";
 
diff --git a/packages/node_modules/@node-red/editor-client/src/sass/notifications.scss b/packages/node_modules/@node-red/editor-client/src/sass/notifications.scss
index 7d7544e2e..c0e87b7ba 100644
--- a/packages/node_modules/@node-red/editor-client/src/sass/notifications.scss
+++ b/packages/node_modules/@node-red/editor-client/src/sass/notifications.scss
@@ -32,7 +32,7 @@
     color: var(--red-ui-primary-text-color);
     border: 1px solid var(--red-ui-notification-border-default);
     border-left-width: 16px;
-    overflow: scroll;
+    overflow: auto;
     max-height: 80vh;
     .ui-dialog-buttonset {
         margin-top: 20px;
diff --git a/packages/node_modules/@node-red/nodes/core/common/24-complete.html b/packages/node_modules/@node-red/nodes/core/common/24-complete.html
index b2d406bb5..2f68a0fcf 100644
--- a/packages/node_modules/@node-red/nodes/core/common/24-complete.html
+++ b/packages/node_modules/@node-red/nodes/core/common/24-complete.html
@@ -18,7 +18,16 @@
         color:"#c0edc0",
         defaults: {
             name: {value:""},
-            scope: {value:[], type:"*[]"},
+            scope: {
+                value: [],
+                type: "*[]",
+                validate: function (v, opt) {
+                    if (v.length > 0) {
+                        return true;
+                    }
+                    return RED._("node-red:complete.errors.scopeUndefined");
+                }
+            },
             uncaught: {value:false}
         },
         inputs:0,
diff --git a/packages/node_modules/@node-red/nodes/core/common/60-link.html b/packages/node_modules/@node-red/nodes/core/common/60-link.html
index 4b8c9a3d6..5c16929c3 100644
--- a/packages/node_modules/@node-red/nodes/core/common/60-link.html
+++ b/packages/node_modules/@node-red/nodes/core/common/60-link.html
@@ -1,4 +1,3 @@
-
 <script type="text/html" data-template-name="link in">
     <div class="form-row">
         <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
@@ -272,7 +271,17 @@
         color:"#ddd",//"#87D8CF",
         defaults: {
             name: { value: "" },
-            links: { value: [], type:"link in[]" },
+            links: {
+                value: [],
+                type: "link in[]",
+                validate: function (v, opt) {
+                    if ((this.linkType === "static" && v.length > 0)
+                      || this.linkType === "dynamic") {
+                        return true;
+                    }
+                    return RED._("node-red:link.errors.linkUndefined");
+                }
+            },
             linkType: { value:"static" },
             timeout: {
                 value: "30",
diff --git a/packages/node_modules/@node-red/nodes/core/common/60-link.js b/packages/node_modules/@node-red/nodes/core/common/60-link.js
index 90b7966e0..c3473e8a1 100644
--- a/packages/node_modules/@node-red/nodes/core/common/60-link.js
+++ b/packages/node_modules/@node-red/nodes/core/common/60-link.js
@@ -164,10 +164,10 @@ module.exports = function(RED) {
                     if (returnNode && returnNode.returnLinkMessage) {
                         returnNode.returnLinkMessage(messageEvent.id, msg);
                     } else {
-                        node.warn(RED._("link.error.missingReturn"))
+                        node.warn(RED._("link.errors.missingReturn"));
                     }
                 } else {
-                    node.warn(RED._("link.error.missingReturn"))
+                    node.warn(RED._("link.errors.missingReturn"));
                 }
                 done();
             } else if (mode === "link") {
diff --git a/packages/node_modules/@node-red/nodes/locales/en-US/messages.json b/packages/node_modules/@node-red/nodes/locales/en-US/messages.json
index 248bb3415..66c492dc8 100644
--- a/packages/node_modules/@node-red/nodes/locales/en-US/messages.json
+++ b/packages/node_modules/@node-red/nodes/locales/en-US/messages.json
@@ -119,7 +119,10 @@
         }
     },
     "complete": {
-        "completeNodes": "complete: __number__"
+        "completeNodes": "complete: __number__",
+        "errors": {
+            "scopeUndefined": "scope undefined"
+        }
     },
     "debug": {
         "output": "Output",
@@ -181,8 +184,9 @@
         "staticLinkCall": "Fixed target",
         "dynamicLinkCall": "Dynamic target (msg.target)",
         "dynamicLinkLabel": "Dynamic",
-        "error": {
-            "missingReturn": "Missing return node information"
+        "errors": {
+            "missingReturn": "Missing return node information",
+            "linkUndefined": "link undefined"
         }
     },
     "tls": {
diff --git a/packages/node_modules/@node-red/nodes/locales/ja/messages.json b/packages/node_modules/@node-red/nodes/locales/ja/messages.json
index 263fbce97..3b5e3d6a4 100644
--- a/packages/node_modules/@node-red/nodes/locales/ja/messages.json
+++ b/packages/node_modules/@node-red/nodes/locales/ja/messages.json
@@ -119,7 +119,10 @@
         }
     },
     "complete": {
-        "completeNodes": "complete: __number__"
+        "completeNodes": "complete: __number__",
+        "errors": {
+            "scopeUndefined": "スコープが未定義"
+        }
     },
     "debug": {
         "output": "対象",
@@ -181,8 +184,9 @@
         "staticLinkCall": "対象を固定で指定",
         "dynamicLinkCall": "対象を動的に指定 (msg.target)",
         "dynamicLinkLabel": "動的",
-        "error": {
-            "missingReturn": "返却するノードの情報が存在しません"
+        "errors": {
+            "missingReturn": "返却するノードの情報が存在しません",
+            "linkUndefined": "リンクが未定義"
         }
     },
     "tls": {