Yesterday, I left a comment that YouTube filtered. After I left that comment, I navigated to my comments history. The comment did not appear there. Instead, I saw “Some activity may not appear yet.”. Today, the comment has not appeared and is not present in my comment history. Today, I no longer see “Some activity may not appear yet.” in my comment history. This means that the possibility that the content will appear is nil. The content was filtered and rejected by YouTube.