Provide at least the following information

• Minecraft version - 1.20.1 (also 1.19.2)
• Mod version and malilib version malilib-fabric-1.20.1-0.16.1.jar litematica-fabric-1.20.1-0.15.3.jar
• A clear description of the issue - I'm not a psychic, so you have to describe the issue thoroughly enough for me to be able to reproduce it without knowing anything at all that is not described in the issue report.

Placement Blocks do not render after reloading the world.

Reproduction

• be in a World and have Litematica active
• load a litematic (as if you want to build it in survival)
• reload the world with "F3+A"
• the litematic disappear