diff --git a/src/components/__tests__/GenerationComposer.test.tsx b/src/components/__tests__/GenerationComposer.test.tsx
index 6215587f..687002fb 100644
--- a/src/components/__tests__/GenerationComposer.test.tsx
+++ b/src/components/__tests__/GenerationComposer.test.tsx
@@ -1046,13 +1046,19 @@ describe("GenerationComposer", () => {
     expect(data.durationSeconds).toBe(4);
   });
 
-  it("shows custom selected video duration in quick settings", () => {
+  it("defaults gateway video dimension quick settings to the first schema option", async () => {
     useWorkflowStore.setState({
       nodes: [videoNode("vid-1", true, { durationSeconds: 6 })],
     });
     render(<GenerationComposer />);
 
-    expect(screen.getByLabelText("Duration")).toHaveValue("6");
+    expect(screen.getByLabelText("Duration")).toHaveValue("4");
+    await waitFor(() => {
+      expect((useWorkflowStore.getState().nodes[0].data as GenerateVideoNodeData).parameters).toMatchObject({
+        duration: "4",
+        resolution: "720p",
+      });
+    });
   });
 
   it("uses the audio model filter and reruns the selected audio node", async () => {
diff --git a/src/components/composer/GenerationComposer.tsx b/src/components/composer/GenerationComposer.tsx
index ca63d6c2..b5289d95 100644
--- a/src/components/composer/GenerationComposer.tsx
+++ b/src/components/composer/GenerationComposer.tsx
@@ -208,10 +208,6 @@ function buildGatewayDimensionSelects(
     .map((parameter) => {
       const options = getSchemaSelectOptions(parameter);
       const value = draft.parameters?.[parameter.name]
-        ?? (parameter.name === "ratio" ? draft.aspectRatio : undefined)
-        ?? (parameter.name === "resolution" ? draft.resolution : undefined)
-        ?? (parameter.name === "duration" ? draft.durationSeconds : undefined)
-        ?? parameter.default
         ?? options[0]?.value;
       return {
         parameter,
@@ -221,6 +217,24 @@ function buildGatewayDimensionSelects(
     });
 }
 
+function applyGatewayDimensionParameterDefaults(
+  schema: ModelParameter[] | undefined,
+  parameters: Record<string, unknown> | undefined
+): { parameters: Record<string, unknown>; changed: boolean } {
+  const next = { ...(parameters ?? {}) };
+  let changed = false;
+  const nameSet = new Set(GATEWAY_DIMENSION_PARAMETER_NAMES);
+
+  for (const parameter of schema ?? []) {
+    if (!nameSet.has(parameter.name) || !parameter.options || parameter.options.length === 0) continue;
+    if (next[parameter.name] !== undefined && next[parameter.name] !== null && next[parameter.name] !== "") continue;
+    next[parameter.name] = parameter.options[0]?.value;
+    changed = true;
+  }
+
+  return { parameters: next, changed };
+}
+
 function getImageCountOptions(schema: ModelParameter[] | undefined): ImageGenerationCount[] {
   return getSchemaOptionValues(schema, IMAGE_COUNT_PARAMETER_NAMES)
     .map((value) => Number(value))
@@ -943,7 +957,7 @@ function buildInitialDataForNode(nodeType: NodeType, draft: ComposerDraft): Part
       model: getLegacyImageModel(draft.selectedModel),
       selectedModel: draft.selectedModel,
       imageCount: draft.imageCount,
-      parameters: {},
+      parameters: draft.parameters ?? {},
       inputSchema: undefined,
       useGoogleSearch: false,
       useImageSearch: false,
@@ -959,7 +973,7 @@ function buildInitialDataForNode(nodeType: NodeType, draft: ComposerDraft): Part
       resolution: draft.resolution,
       durationSeconds: normalizeVideoDurationSeconds(draft.durationSeconds),
       soundEnabled: modelSupportsVideoSound(draft.selectedModel) ? draft.soundEnabled ?? true : undefined,
-      parameters: {},
+      parameters: draft.parameters ?? {},
       inputSchema: undefined,
       status: "idle",
       error: null,
@@ -970,7 +984,7 @@ function buildInitialDataForNode(nodeType: NodeType, draft: ComposerDraft): Part
       inputImages: draft.inputImages,
       inputPrompt: draft.prompt.trim(),
       selectedModel: draft.selectedModel,
-      parameters: {},
+      parameters: draft.parameters ?? {},
       inputSchema: undefined,
       status: "idle",
       error: null,
@@ -980,7 +994,7 @@ function buildInitialDataForNode(nodeType: NodeType, draft: ComposerDraft): Part
     return {
       inputPrompt: draft.prompt.trim(),
       selectedModel: draft.selectedModel,
-      parameters: {},
+      parameters: draft.parameters ?? {},
       inputSchema: undefined,
       status: "idle",
       error: null,
@@ -1553,6 +1567,20 @@ export function GenerationComposer() {
     ? context.node?.data as NanoBananaNodeData | GenerateVideoNodeData | GenerateAudioNodeData | undefined
     : undefined;
   const activeParameterSchema = generationNodeData?.parameterSchema ?? [];
+  useEffect(() => {
+    if (context.mode !== "node-edit" || !context.node || activeParameterSchema.length === 0) return;
+    const normalized = applyGatewayDimensionParameterDefaults(activeParameterSchema, draftRef.current.parameters);
+    if (!normalized.changed) return;
+
+    setDraft((current) => {
+      const currentNormalized = applyGatewayDimensionParameterDefaults(activeParameterSchema, current.parameters);
+      if (!currentNormalized.changed) return current;
+      const next = { ...current, parameters: currentNormalized.parameters };
+      draftRef.current = next;
+      return next;
+    });
+    updateNodeData(context.node.id, { parameters: normalized.parameters });
+  }, [activeParameterSchema, context, updateNodeData]);
   const gatewayDimensionSelects = buildGatewayDimensionSelects(activeParameterSchema, draft);
   const imageCountOptions = getImageCountOptions(activeParameterSchema);
   const visibleImageCountOptions = imageCountOptions.length > 0
diff --git a/src/components/nodes/PromptNode.tsx b/src/components/nodes/PromptNode.tsx
index fa8e5a7b..f07fef72 100644
--- a/src/components/nodes/PromptNode.tsx
+++ b/src/components/nodes/PromptNode.tsx
@@ -235,10 +235,14 @@ export function PromptNode({ id, data, selected }: NodeProps<PromptNodeType>) {
                 setIsEditing(true);
               }
             }}
-            className="flex h-full w-full cursor-text items-center justify-center rounded-lg bg-neutral-800 p-8 text-center outline-none"
+            className={`nodrag nopan nowheel flex h-full w-full cursor-text rounded-lg bg-neutral-800 p-8 outline-none ${
+              promptText
+                ? "items-start justify-start overflow-auto text-left select-text"
+                : "items-center justify-center text-center"
+            }`}
           >
             {promptText ? (
-              <div className="w-full whitespace-pre-wrap text-left text-lg leading-relaxed text-neutral-100">
+              <div className="w-full whitespace-pre-wrap break-words text-lg leading-relaxed text-neutral-100 select-text">
                 {localPrompt}
               </div>
             ) : (