uirevision property doesn't keep the viewpoint consistent

The following is the copy-paste of a question I opened on stackoverflow, it looks like to be a bug, so here i go:

I'm trying to keep the viewpoint consistent in my plotly-dash web app after every callback. This should be straightforward according to many already answered questions. The following line of code should do the magic:

fig.update_layout(uirevision='constant')

Unfortunately for me, it looks like that this is not the case for 3D scatter plots, here is a very brief piece of code that should allow to reproduce my problem:

import plotly.express as px
df = px.data.iris()

import dash
from dash import dcc
from dash import html
from dash import Input, Output

app = dash.Dash()
app.layout = html.Div([
    dcc.Dropdown(['option1', 'option2', 'option3'], 'axis', id='x-dropdown', clearable=False),
    dcc.Graph(id='main-plot')
])
@app.callback(
    Output('main-plot', 'figure'),
    Input('x-dropdown', 'value'))
def update_figure(x_selector):
    fig = px.scatter_3d(df, x='sepal_length', y='sepal_width', z='petal_width',  color='species')
    fig.update_layout(uirevision='constant')
    return fig
    
app.run_server(debug=True, use_reloader=False)

This is what i'm observing:

I can tell that the uirevision is doing something since the viewpoint is not completely reset after the callback, but it is still very imprecise. Is there something I'm missing or is this the expected behavior?

Commencez par exécuter la reproduction minimale en Python Dash présente dans l’issue et observez le nuage de points 3D après avoir modifié la liste déroulante. Étudiez comment le paramètre de layout uirevision affecte le point de vue 3D entre les callbacks ; le travail est terminé lorsque le point de vue reste cohérent après le callback sans perturber le comportement du graphique présenté.