Store credentials aren't saved

[adswa]

Leaving a quick note -- I believe we ran into this recently already and figured out the cause, but I couldn't yet find it.

When cloning from the ICF store, my credentials are queried for interactively, but they aren't automatically saved:

icf) adina@muninn in /tmp
# I have a URL substitution in place, thus the short URL
❱ datalad clone inm-icf://dl-Z03/P000624 a
Cloning:   0%|                             | 0.00/1.00 [00:00<?, ? candidates/s]Credential needed for access to https://data.inm-icf.de/dl-Z03/P000624_XDLRA--refs
user: a.wagner

password: 
password (repeat): 
[WARNING] You appear to have cloned an empty repository.                        
[WARNING] Cloned /tmp/a but could not find a branch with commits                
install(ok): /tmp/a (dataset)
datalad clone inm-icf://dl-Z03/P000624 a  19.36s user 14.31s system 0% cpu 1:00:29.43 total
(icf) adina@muninn in /tmp
❱ datalad credentials
crcns(user_password ✗): ...
xnat(user_password ✓): ...
hcp-s3(aws-s3 ✓): ...
kaggle(user_password ✗): ...
newprovider(user_password ✗): ...
upload.wikimedia.org(user_password ✗): ...
loris-demo(loris-token ✗): ...
NDA(nda-s3 ✗): ...
figshare(token ✓): ...
datalad-test-s3(aws-s3 ✗): ...
miNDAR(user_password ✗): ...
crawdad(user_password ✗): ...
nitrc(user_password ✓): ...
hcp-db(user_password ✓): ...
NSIDC(user_password ✗): ... 
api.osf.io(token ✓): ...
new-gini(token ✓): ...
demo-dataverse(token ✓): ...
new(token ✓): (credential) ...
webdav-a.wagner@fz-juelich.de-https://fz-juelich.sciebo.de/login?redirect_url=%252Ff%252F1216264329(user_password ✓): ...
github(secret ✓): ...
httbin-dummy(user_password ✓): ...
nitrc(user_password ✓): ...
dataverse(token ✓): ...
webdav-a.wagner@fz-juelich.de-https://fz-juelich.sciebo.de/sciebo(user_password ✓): ...
new-gini-gii(token ✓): ...
(icf) adina@muninn in /tmp
❱ pip freeze | grep datalad
datalad==0.18.4
datalad-next==1.0.0b2