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.
The latest is 2020.2. Where did you hear 2020.3 is out? Here for sure not: https://mcreator.net/changelog
Do this: