[BUG] callback_shared leads to infinite page loading

[anarchy16]

I want to make a button that changes its text upon click and triggers the next callback (plot update)

@app.callback(
    [Output("interval-graph", "disabled"), 
    Output("start-record-button", "buttonText")],
    [Input("start-record-button", "n_clicks")],
    [State("interval-graph", "disabled")],
)
def stop_GraphUpdate(n_clicks, current):
    if n_clicks == 0:
        return True, "Start record"
    return not current, "Stop Record" if current else "Start Record"

However, if I use callback_shared (which I want), page never loads and the Python script cannot be stopped with Ctrl + C.

Env

dash                      1.13.4
dash-bootstrap-components 0.11.3
dash-core-components      1.10.1
dash-daq                  0.5.0
dash-devices              0.1.3
dash-html-components      1.0.3
dash-renderer             1.5.1
dash-table                4.8.1

Describe the bug

What causes a problem is a button callback. If simplified:

import dash_devices
from dash_devices.dependencies import Input, Output, State
import dash_html_components as html
import dash_core_components as dcc

app = dash_devices.Dash(__name__)
app.config.suppress_callback_exceptions = True


app.layout = html.Div([
    html.Button(
        id = 'start-stop',
        n_clicks=0
        style={'width': 150, 'height':50, 'color':'orange'}
    ), 
])

@app.callback_shared(
    Output("start-stop", "children"),
    [Input("start-stop", "n_clicks")],
)

def button_text(n_clicks):
    if n_clicks == 0 or n_clicks %2 == 0:
        return "Start"
    else:
        return 'Stop'

if __name__ == "__main__":
    app.run_server(
    debug=True,
    host='localhost', port = 5000)
    

Which leads to infinite page loading.

Expected behavior

Observed only for callback_shared, callback behaves as it should.

[lucapinello]

I have the same problem. Did you find a solution?

[richlegrand]

Can you please give this wheel a try to see if it fixes the issue?

https://drive.google.com/file/d/1SLYmPLQv-HdDKZIjBF14PoC7P-AD7daV/view?usp=sharing

thanks :)

[lucapinello]

yes it works now!