Strange font set to user terminal

Bug description

We have a Jupyterhub (TLJH) server with about 10 users. Currently one of them has this as his default terminal font when using Chrome. He does not have this issue when using Firefox.

jupyterhub_font_bug

No one else has this issue. What we tried:

Setting and resetting the font through the console settings
Restarting the server
Upgrading Jupyterhub
Clearing his cache and cookies
Removing and recreating his user account (with the existing user space, which we couldn't afford to remove)
Making sure (to the best of our knowledge) no font overrides are set anywhere

He needs to use the terminal regularly and having to read the screen like this is very annoying. Any tips would be appreciated.

How to reproduce

Not sure really.

Expected behaviour

Normal monospace font to be rendered in the terminal.

Actual behaviour

Strange font.

Your personal set up

Server host OS:

Description:    Ubuntu 22.04.3 LTS
Release:        22.04
Codename:       jammy

He accesses the server on a Windows 10 machine using Chrome Version 125.0.6422.61 (Official Build) (64-bit).

We installed TLJH by following the instructions in the documentation here.

pip freeze output:

alembic==1.13.1
altair==5.3.0
anyio==4.2.0
appdirs==1.4.4
argon2-cffi==23.1.0
argon2-cffi-bindings==21.2.0
arrow==1.3.0
asttokens==2.4.1
async-generator==1.10
async-lru==2.0.4
attrs==23.2.0
Automat==20.2.0
Babel==2.14.0
backcall==0.2.0
bcrypt==3.2.0
beautifulsoup4==4.10.0
beniget==0.4.1
bleach==6.1.0
blinker==1.4
Brotli==1.0.9
cachetools==5.3.3
certifi==2020.6.20
certipy==0.1.3
cffi==1.15.0
chardet==4.0.0
charset-normalizer==3.3.2
click==8.1.7
cloud-init==23.3.3
cloudpickle==3.0.0
colorama==0.4.4
comm==0.2.1
command-not-found==0.3
configobj==5.0.6
constantly==15.1.0
cryptography==3.4.8
cycler==0.11.0
dask==2024.2.0
dbus-python==1.2.18
debugpy==1.8.0
decorator==4.4.2
defusedxml==0.7.1
distro==1.7.0
distro-info==1.1+ubuntu0.2
dnspython==2.1.0
elastic-transport==8.12.0
elasticsearch==8.12.0
entrypoints==0.4
et-xmlfile==1.1.0
exceptiongroup==1.2.0
executing==2.0.1
fastjsonschema==2.19.1
fonttools==4.29.1
fqdn==1.5.1
fs==2.4.12
fsspec==2024.2.0
gast==0.5.2
gitdb==4.0.11
GitPython==3.1.43
greenlet==3.0.3
gssapi==1.6.12
gyp==0.1
h11==0.14.0
html5lib==1.1
httpcore==1.0.2
httplib2==0.20.2
httpx==0.26.0
hyperlink==21.0.0
idna==3.3
importlib-metadata==7.0.1
incremental==21.3.0
ipaclient==4.9.8
ipalib==4.9.8
ipaplatform==4.9.8
ipapython==4.9.8
ipykernel==6.29.0
ipython==8.21.0
ipython_genutils==0.2.0
ipywidgets==8.1.1
isoduration==20.11.0
jdatetime==4.1.1
jedi==0.19.1
jeepney==0.7.1
Jinja2==3.0.3
joblib==1.3.2
json5==0.9.14
jsonpatch==1.32
jsonpointer==2.0
jsonschema==4.21.1
jsonschema-specifications==2023.12.1
jupyter==1.0.0
jupyter-console==6.6.3
jupyter-contrib-core==0.4.2
jupyter-contrib-nbextensions==0.7.0
jupyter-events==0.9.0
jupyter-highlight-selected-word==0.2.0
jupyter-lsp==2.2.2
jupyter-nbextensions-configurator==0.6.3
jupyter-resource-usage==1.0.1
jupyter-telemetry==0.1.0
jupyter_client==8.6.0
jupyter_core==5.7.1
jupyter_server==2.12.5
jupyter_server_terminals==0.5.2
jupyterhub==4.0.2
jupyterhub-dummyauthenticator==0.3.1
jupyterlab==4.1.1
jupyterlab_pygments==0.3.0
jupyterlab_server==2.25.2
jupyterlab_widgets==3.0.10
keyring==23.5.0
kiwisolver==1.3.2
launchpadlib==1.10.16
lazr.restfulclient==0.14.4
lazr.uri==1.0.6
locket==1.0.0
lxml==4.8.0
lz4==3.1.3+dfsg
Mako==1.3.2
markdown-it-py==3.0.0
MarkupSafe==2.0.1
matplotlib==3.5.1
matplotlib-inline==0.1.6
mdurl==0.1.2
mistune==3.0.2
more-itertools==8.10.0
mpmath==0.0.0
nbclient==0.9.0
nbconvert==7.14.2
nbformat==5.9.2
nest-asyncio==1.6.0
netaddr==0.8.0
netifaces==0.11.0
notebook==7.0.7
notebook_shim==0.2.3
numpy==1.24.0
oauthlib==3.2.0
olefile==0.46
openpyxl==3.1.2
overrides==7.7.0
packaging==23.2
pamela==1.1.0
pandas==2.2.0
pandocfilters==1.5.1
paralleltools==0.0.3
parso==0.8.3
partd==1.4.1
patsy==0.5.6
pexpect==4.8.0
pickleshare==0.7.5
Pillow==9.0.1
platformdirs==4.2.0
plotly==5.18.0
ply==3.11
prometheus-client==0.19.0
prompt-toolkit==3.0.43
protobuf==4.25.3
psutil==5.9.8
psycopg2-binary==2.9.9
ptyprocess==0.7.0
pure-eval==0.2.2
py==1.10.0
pyarrow==15.0.0
pyasn1==0.4.8
pyasn1-modules==0.2.1
pycparser==2.21
pydeck==0.9.0
Pygments==2.17.2
PyGObject==3.42.1
PyHamcrest==2.0.2
PyJWT==2.3.0
pyodbc==5.1.0
pyOpenSSL==21.0.0
pyparsing==2.4.7
pyperclip==1.8.2
pyrsistent==0.18.1
pyserial==3.5
python-apt==2.4.0+ubuntu2
python-augeas==0.5.0
python-dateutil==2.8.2
python-debian==0.1.43+ubuntu1.1
python-json-logger==2.0.7
python-ldap==3.2.0
python-magic==0.4.24
python-yubico==1.3.3
pythran==0.10.0
pytz==2024.1
pyusb==1.2.1.post1
PyYAML==5.4.1
pyzmq==25.1.2
qrcode==7.3.1
qtconsole==5.5.1
QtPy==2.4.1
referencing==0.33.0
requests==2.31.0
requests-toolbelt==0.9.1
rfc3339-validator==0.1.4
rfc3986-validator==0.1.1
rich==13.7.1
rpds-py==0.17.1
ruamel.yaml==0.18.6
ruamel.yaml.clib==0.2.8
scikit-learn==1.4.0
scipy==1.8.0
SecretStorage==3.3.1
Send2Trash==1.8.2
service-identity==18.1.0
six==1.16.0
smmap==5.0.1
sniffio==1.3.0
sos==4.5.6
soupsieve==2.3.1
SQLAlchemy==2.0.26
ssh-import-id==5.11
stack-data==0.6.3
statsmodels==0.14.1
streamlit==1.33.0
sympy==1.9
systemd-python==234
tenacity==8.2.3
terminado==0.18.0
testpath==0.5.0
threadpoolctl==3.2.0
tinycss2==1.2.1
toml==0.10.2
tomli==2.0.1
toolz==0.12.1
tornado==6.4
traitlets==5.14.1
Twisted==22.1.0
types-python-dateutil==2.8.19.20240106
typing_extensions==4.11.0
tzdata==2023.4
ubuntu-advantage-tools==8001
ubuntu-drivers-common==0.0.0
ufoLib2==0.13.1
ufw==0.36.1
unattended-upgrades==0.1
unicodedata2==14.0.0
uri-template==1.3.0
urllib3==1.26.5
wadllib==1.3.6
watchdog==4.0.0
wcwidth==0.2.13
webcolors==1.13
webencodings==0.5.1
websocket-client==1.7.0
widgetsnbextension==4.0.9
xgboost==2.0.3
xkit==0.0.0
zipp==1.0.0
zope.interface==5.4.0

jupyterhub / the-littlest-jupyterhub