I can’t tell from your link what the issue is – do you mean commented as with a post, or they have created a forum reply and if so which one?
They are not replies, they are showing up awaiting moderation in my comment section of the dashboard.
http://s30.postimg.org/vwgam8in5/comments.png
If you have askimet installed, then this will trap these.
Well you are probably right, but that’s a band-aid, not a fix to something that should not be happening. There is no comment field on the pages/topics that these comments are being left on. I have disabled comments by non-logged in visitors, I have also ran a SQL query to disable pings and trackbacks on all existing pages & post, yet I am still getting comments on topics.
Installing yet another plugin is not how I want to fix this. I would rather disable the ability for bots to find and use any comment features on these topics period.
Hope everyone had a fun labor day weekend.
Indeed pingbacks and trackbacks should not be enabled, I’ve just created a ticket to have a look at this, #2677.
It was also mentioned in this thread https://bbpress.org/forums/topic/disable-pingbacks/