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.
Custom blocks are piston pushable by default. To disable this, set their hardness to -1 (unbreakable) or set that the block has tile entity / inventory enabled.