Dask DataFrame assign on empty DataFrame against non-empty DataFrame produces an empty DataFrame

Dask Dataframe Assign

import pandas as pd
import dask.dataframe as dd

# Create an empty dask.dataframe
df = dd.from_pandas(pd.DataFrame(), npartitions=1)
mappings = {'a': 1}

# Assign the new columns and data
df = df.assign(**mappings)

# Columns show up but '1' is not present and DataFrame shows up as empty
df.head()