The Bowler, Blackbeard's Stash Cannonball Grenades (and probably the Jabberwocky too, but when was the last time you've seen anyone use that weapon?) are all broken.
Edit: Buccaneer Ramirez's cannonballs also do the same, apparently. Just appears to be all cannonball-related stuff
Thanks for the tag. We thought this would be resolved with the Broadside fix but it appears that's not the case. Sending this over.