Dash DataTable data and data_previous are the same when value is changed via paste (CTRL + V)

Describe your context

dash                 2.0.0
dash-core-components 2.0.0
dash-html-components 2.0.0
dash-table           5.0.0

• if frontend related, tell us your Browser, Version and OS

  • OS: MacOS Big Sur
  • Browser: Chrome
  • Version 96.0.4664.110

Describe the bug

When the user changes a value in a dash datatable using copy/paste (CTRL + V), data and data_previous are identical, i.e., data_previous is updated to the current value.

Expected behavior

I expect data_previous to be the old value of the cell, in order to make it possible to identify the change.

Minimal Working Example

import dash
from dash.dependencies import Input, Output, State
from dash import dash_table
from dash import html

app = dash.Dash(__name__)

app.layout = html.Div([
    dash_table.DataTable(
        id='computed-table',
        columns=[
            {'name': 'Input Data', 'id': 'input-data'},
        ],
        data=[{'input-data': i} for i in range(11)],
        editable=True,
    ),
    html.Pre(id="output_div"),
])


@app.callback(
    Output('output_div', 'children'),
    Input('computed-table', 'data'),
    State('computed-table', 'data_previous'),
    State('computed-table', 'data_timestamp'))
def update_columns(rows, previous, timestamp):
    if previous == rows:
        return f"{timestamp} - data and data previous are the same"
    else:
        return f"{timestamp} - data and data previous are not the same"

if __name__ == '__main__':
    app.run_server()

Start with the minimal working example in the issue and reproduce the paste operation in Dash DataTable. Trace the callback values for data and data_previous, then verify that data_previous retains the cell's old value after a pasted edit.