Fixed display bugs for nodes without description.

src/editor/components/nodedetails.tsx

@@ -84,7 +84,7 @@ function NodeDetails({
                         name="node-name"
                         placeholder="Enter name"
                         className="bottom-space"
-                        value={referenceData.name}
+                        value={referenceData.name ?? ""}
                         onChange={(event) =>
                             handleDataChange("name", event.target.value)
                         }
@@ -103,7 +103,7 @@ function NodeDetails({
                         name="node-description"
                         className="bottom-space"
                         placeholder={"Enter description"}
-                        value={referenceData.description}
+                        value={referenceData.description ?? ""}
                         onChange={(event) =>
                             handleDataChange("description", event.target.value)
                         }
@@ -208,7 +208,7 @@ function NodeDetails({
                         id="node-references"
                         name="node-references"
                         className="bottom-space"
-                        value={referenceData.references}
+                        value={referenceData.references ?? ""}
                         onChange={(event) =>
                             handleDataChange("references", event.target.value)
                         }

src/editor/editor.tsx

@@ -233,6 +233,10 @@ export class Editor extends React.PureComponent<any, stateTypes> {
     }
 
     private handleNodeDataChange(nodeData: NodeDataChangeRequest[]) {
+        if (nodeData.length == 0) {
+            return;
+        }
+
         // Create a shallow copy of the graph object to trigger an update over setState
         const graph = Object.assign(new DynamicGraph(), this.state.graph);
 
@@ -260,6 +264,10 @@ export class Editor extends React.PureComponent<any, stateTypes> {
     }
 
     private handleNodeDeletion(ids: number[]) {
+        if (ids.length == 0) {
+            return;
+        }
+
         const graph = Object.assign(new DynamicGraph(), this.state.graph);
         ids.forEach((id) => graph.deleteNode(id));
         const selectedNodes = this.state.selectedNodes.filter(