Violin plot with 'name' attribute set as Datetime gets flattened out

I'm trying to make a horizontally oriented ridge plot . Following is the code
plotly.version == 5.3.1

Ridgeline plot

base_date = dt.datetime.strptime(start_date,'%Y-%m-%d')
fig = go.Figure()

for day in range(days) :
                    offset = dt.timedelta(days=day)
                    date = (base_date + offset).strftime('%Y-%m-%d')
                    violin_plot_data = swData[date]
                    fig.add_trace(go.Violin(x = violin_plot_data.loc[:,metric_name] , 
                                                    orientation = 'h',
                                                    width = 3 ,
                                                    side = 'positive',
                                                    meanline_visible=True,
                                                    points = False
                                                   )
                                         )
    
fig.show()

I'm getting the following output :

However I wish to set "name" attribute for individual dates . I did the following

Ridgelin plot

base_date = dt.datetime.strptime(start_date,'%Y-%m-%d')
fig = go.Figure()

for day in range(days) :
    offset = dt.timedelta(days=day)
    date = (base_date + offset).strftime('%Y-%m-%d')
    violin_plot_data = swData[date]
    fig.add_trace(go.Violin(x = violin_plot_data.loc[:,metric_name] , 
                                    orientation = 'h',
                                    width = 3 ,
                                    side = 'positive',
                                    name = date,
                                    meanline_visible=True,
                                    points = False
                                   )
                         )
fig.show()

The output that I'm getting is

Kindly clarify if it's a bug in the framework or a silly mistake from my side . TY :)

EDIT : I've found a work around and answered it here [https://stackoverflow.com/a/69894008/6571670] but I feel Plotly should be able to parse dates explicitly

Plotly 5.3.1で提供されたridge-plotの例を再現し、まず各violin traceのnameとしてdatetime文字列を渡さない場合、次に渡す場合を試す。violinの名前がどのように解析・レンダリングされるかを追跡し、その後、日付ラベルが区別されたままでプロットが平坦化されないことを確認する。報告されたworkaroundはリグレッションケースとして保持する。