Single bar datum does not display with barmode='overlay'

[radumas]

I'm creating a bar plot with multiple categories and I wanted to colour each category differently, even though the categories don't overlap. Multiple rows display fine using barmode='overlay', but if there's only one row in a category, it doesn't display:

If I don't split the data, it displays fine (different street, same issue):

If I change barmode='relative' then it displays fine:

[jackparmer]

Hey @radumas I think this may be a Plotly.js issue. Can you please submit this report in that repo?
https://github.com/plotly/plotly.js/issues
This Python library is simply a Python interface to Plotly.js.