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.
MCreator just binds the textures to a custom model so we can't really control rendering. This is done by the MC render engine and the model definition.
Keep in mind Forge devs did quite some changes to the render engine in the last 1.14.4 updates so this might cause that problem.