MCreator issue tracker has been migrated to GitHub.
Existing tickets have been migrated to GitHub. Please open new tickets on the GitHub tracker instead. If you do not have a GitHub account, all feature requests and bug reports from forums are still considered and checked by the maintainers.
Water mobs are quite buggy at the moment. We have a ticket for this open and plan to improve their support in the future.
Right now, you could check on which block the entity is using procedures at the moment and kill it if it is not in water.