When I encounter a Drowned with a trident (very rarely), he is repeatedly struck by tridents as I strike him with my ax or sword. I have no trident as yet. I look around to see if other Drowned are doing this and there is no one else there. After he is killed and his trident falls to the ocean floor you can see there all the other tridents that struck him (see photo). This has happened twice in the last week.
Is this still an issue in the most recent versions (currently that is 1.13.2, or the latest snapshot 19w12b) of Minecraft? If so, please update the affected versions and help us keeping this ticket updated from time to time. If you are the owner/reporter of this ticket, you can modify the affected version(s) yourself.