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

Reproduce the supplied ridge-plot example with Plotly 5.3.1, first without and then with the datetime string passed as each violin trace's name. Trace how violin names are parsed and rendered, then verify that date labels remain distinct and the plot is not flattened; preserve the reported workaround as a regression case.