Opacity breaks subplot

šŸ“Š Plotly Python
1

Please see attached picture and the example below.

Not sure if this is a bug or Iā€™m doing it wrong? If opacity is commented out, everything works as expected.

>> plotly.__version__
'5.6.0'

Minimal working example:

import pandas as pd
import plotly.graph_objects as go
from plotly.subplots import make_subplots

z_data = pd.read_csv(
    "https://raw.githubusercontent.com/plotly/datasets/master/api_docs/mt_bruno_elevation.csv"
)
fig = make_subplots(
    rows=1,
    cols=2,
    specs=[[{"is_3d": True}, {"is_3d": True}]],
)
fig.add_trace(go.Surface(z=z_data.values))
fig.add_trace(
    go.Scatter3d(
        x=(1, 1),
        y=(1, 1),
        z=(1, 1),
        opacity=0.75,  # comment out and problem solved
    )
)
fig.add_trace(go.Surface(z=z_data.values), 1, 2)
camera = dict(
    eye=dict(x=-1.75, y=1.75, z=0.5),
)
fig.update_layout(
    scene2_camera=camera,
)
# fig.show()  # works with/without opacity
fig.write_image("test.png")

test
test700Ɨ500 66 KB

Best regards
Florian