Label.change event re-triggers itself

[anentropic]

Describe the bug

The Label.change event fires when its value did not change

In fact the completion of handling the change event seems to re-trigger the change event

(I encountered this while trying to use a hidden Label as a workaround for State objects have no change event #2107)

Issue may be specific to the Label component, if I substitute a hidden Textbox the issue does not happen

Is there an existing issue for this?

• I have searched the existing issues

Reproduction

import gradio as gr

def set_label(val):
    print("set_label")
    return f"> {val}"

def on_change(val):
    print(f"on_change: {val}")

with gr.Blocks() as demo:
    inp = gr.Textbox(label="Set label")
    label = gr.Label("", visible=False)

    inp.submit(set_label, [inp], [label])

    label.change(on_change, [label], None)

demo.launch(debug=True)

Screenshot

The code above gets stuck in a loop

it seems like the change event re-triggers itself

Logs

n/a

System Info

gradio 3.32.0

Severity

annoying

[freddyaboulton]

Thanks @anentropic - will take a look!