Video description, long comments and list of subscriptions are expanded automatically; all the replies are shown after pressing "Show more replies" button
< Feedback on Youtube: expand description and long comments; show all the replies
Give me please a link to the page where replies are not expanded. And tell me your browser and tampermonkey/greasemonkey version.
Also please check the script's settings: whether "Expand long replies to comments" option is enabled.
Doesnt seem to expand replies :(