BUG: multi-index df fillna with value not working after 1.4.3 #47649
Labels
Bug
Missing-data
np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
MultiIndex
Regression
Functionality that used to work in a prior pandas version
Milestone
Pandas version checks
I have checked that this issue has not already been reported.
I have confirmed this bug exists on the latest version of pandas.
I have confirmed this bug exists on the main branch of pandas.
Reproducible Example
Issue Description
multi-index df fillna with value not working after 1.4.3
Expected Behavior
Installed Versions
INSTALLED VERSIONS
commit : e8093ba
python : 3.9.12.final.0
python-bits : 64
OS : Darwin
OS-release : 21.5.0
Version : Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:37 PDT 2022; root:xnu-8020.121.3~4/RELEASE_ARM64_T6000
machine : arm64
processor : arm
byteorder : little
LC_ALL : None
LANG : zh_CN.UTF-8
LOCALE : zh_CN.UTF-8
pandas : 1.4.3
numpy : 1.22.4
pytz : 2021.3
dateutil : 2.8.2
setuptools : 60.5.0
pip : 22.0.4
Cython : 0.29.28
pytest : 7.1.0
hypothesis : None
sphinx : 3.0.4
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : 2.11.3
IPython : 8.1.1
pandas_datareader: None
bs4 : 4.10.0
bottleneck : None
brotli : None
fastparquet : None
fsspec : None
gcsfs : None
markupsafe : 2.0.1
matplotlib : 3.2.2
numba : None
numexpr : None
odfpy : None
openpyxl : None
pandas_gbq : None
pyarrow : 7.0.0
pyreadstat : None
pyxlsb : None
s3fs : None
scipy : 1.8.0
snappy : None
sqlalchemy : 1.4.32
tables : None
tabulate : 0.8.9
xarray : None
xlrd : None
xlwt : None
zstandard : None
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