Issue [Solved] Using wp_insert_comment() doesn't make the comment appear in frontend

Hello,

I'm using the native function wp_insert_comment to write a comment to a post. Technically, it works well: The comment is in the backend and in the database. However, when I go to that post, the comment is not there.

But when I update any comment or if I delete a comment in the backend, suddenly I also see the previous comment I created with that function. It seems like there is some cache that gets deleted when I do a change in the comments in the backend? 

It has to do something with wpDiscuz because disabling the plugin also makes the issue go away