diff --git a/packages/dashboard/app/components/WorkflowNodeEditor.css b/packages/dashboard/app/components/WorkflowNodeEditor.css
index 697b04b963..541a3ac2d4 100644
--- a/packages/dashboard/app/components/WorkflowNodeEditor.css
+++ b/packages/dashboard/app/components/WorkflowNodeEditor.css
@@ -1383,7 +1383,7 @@
 
   .wf-editor-body--editor-stage .wf-editor-canvas-wrap {
     display: flex;
-    flex: 1 1 auto;
+    flex: 0 1 auto;
     width: 100%;
     min-width: 0;
     min-height: 0;
diff --git a/packages/dashboard/app/components/__tests__/WorkflowNodeEditor.css.test.ts b/packages/dashboard/app/components/__tests__/WorkflowNodeEditor.css.test.ts
index d71fdcb9d7..68e5302085 100644
--- a/packages/dashboard/app/components/__tests__/WorkflowNodeEditor.css.test.ts
+++ b/packages/dashboard/app/components/__tests__/WorkflowNodeEditor.css.test.ts
@@ -133,6 +133,7 @@ describe("WorkflowNodeEditor mobile CSS contract", () => {
     expect(editorBodyRule).toMatch(/overflow-x\s*:\s*hidden\s*;/);
 
     const editorStageWrapRule = findRule(mobileBlocks, /\.wf-editor-body--editor-stage \.wf-editor-canvas-wrap\s*\{[^}]*\}/);
+    expect(editorStageWrapRule).toMatch(/flex\s*:\s*0 1 auto\s*;/);
     expect(editorStageWrapRule).toMatch(/width\s*:\s*100%\s*;/);
     expect(editorStageWrapRule).toMatch(/min-width\s*:\s*0\s*;/);
     expect(editorStageWrapRule).toMatch(/overflow\s*:\s*hidden\s*;/);