stdout=False - output is still printed

[chupvl]

Hello!
I stumble upon possible issue, I am trying to limit the printed output to the jupyter notebook and if I understand correctly, it can be solved using stdout in Validator, like this
molvs.validate.Validator(stdout=False, raw=False, log_format='%(validation)s')
But I still got the explicit print out to Jupyter notebook with all found validations, I would like to block them all.
Thanks!