So, scrolling past marks the posts as “read” but that won’t hide them. The way I do it is to use the “hide read” button in the more options menu where the settings button lives. Alternatively you can use that other setting to automatically hide all read posts, but I can’t find that setting either…
Was the first character I finished a campaign with. The DM and I played the chest light beam on rolling an 8 as instead being nipple lasers because who doesn’t like a 7 ft tall Minotaur barbarian shooting nipple lasers…