`TabbedInterface` bug: Second Tab Running Logic of First Tab

Describe the bug

I have a gradio app with two functions for seperate purposes. When running the Interfaces in isolation, they work as expected. When I put them in the TabbedInterface, which ever tab is put first works fine, but the second one always begins running the logic of the first. Again, this happens no matter which of the interfaces I put first, the second tab always runs the others logic.

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Reproduction

# slightly edited from original source code
import gradio as gr

def a(audio):
  # not sharing source code
  print('foo')

def b(audio):
  print('bar')

a_demo = gr.Interface(
   a,
    "audio",
    "audio",
)

b_demo = gr.Interface(
    b,
    "audio",
    [gr.Number(label="Watermark Score (0-1)"), gr.Textbox(label="Watermark Message")],

)

demo = gr.TabbedInterface(
    [a_demo, b_demo],
    ["A Demo", "B Demo"],
)

def get_args():
    parser = argparse.ArgumentParser(description="Run the watermarking application")
    parser.add_argument(
        "--a", action="store_true", help="Launch only the watermark demo"
    )
    parser.add_argument(
        "--b", action="store_true", help="Launch only the check watermark demo"
    )
    parser.add_argument(
        "--port",
        type=int,
        default=7860,
        help="Specify the port number for the server to run on",
    )
    return parser.parse_args()

def main():
    args = get_args()
    if args.a:
        a_demo.launch(
            show_error=True, debug=True, server_port=args.port, share=True
        )
    elif args.b:
       b_demo.launch(
            show_error=True, debug=True, server_port=args.port, share=True
        )
    else:
        demo.launch(show_error=True, server_port=args.port)

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