This had been a problem with me for the last few months [I am probably not the only one]. On a fresh install of Chromium whenever i tried to comment on a Youtube video a pop-up would come up for 5 seconds disappear then leave me unable to comment. I could not find out why

Finally reading around more found the rather simple answer



enter in URL box:
Code:
chrome://settings/contentExceptions#cookies
and add the following domains:


accounts.youtube.com
accounts.google.com
apis.google.com
plus.google.com


OR


[*.]google.com
[*.]youtube.com

and then reload Chromium