Description
Code Sample, a copy-pastable example
pd.DataFrame(columns=["date", "crew_member_id"])
.groupby(["date", "crew_member_id"], as_index=False)
.sum()Problem description
With 1.3rc1 this fails with ValueError: Length of values (0) does not match length of index (1) while 1.2 returns and empty frame.
Expected Output
If this is the expected behavior fine. Just wanted to ensure that it is not an accidental regression.