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.
Material property is directly linked to the system of Materials in Minecraft. We can't change what effects does each material cause. Think of the material property as some kind of descriptor of a block rather than a functional property in most cases.