Update app.py

app.py

@@ -465,10 +465,12 @@ with gr.Blocks(css=css) as demo:
                 """)
             
             with gr.Column():
-                with gr.Row():
-                    working_frame = gr.Dropdown(label="working frame ID", choices=[""], value=None, visible=False, allow_custom_value=False, interactive=True)
-                    change_current = gr.Button("change current", visible=False)
-                output_result = gr.Image(label="current working mask ref")
+                with gr.Group():
+                    with gr.Group():
+                        with gr.Row():
+                            working_frame = gr.Dropdown(label="working frame ID", choices=[""], value=None, visible=False, allow_custom_value=False, interactive=True)
+                            change_current = gr.Button("change current", visible=False)
+                    output_result = gr.Image(label="current working mask ref")
                 with gr.Group():
                     with gr.Row():
                         vis_frame_type = gr.Radio(label="Propagation level", choices=["check", "render"], value="check", scale=2)