Glitched block rendering in structure block preview

So I was building a Minecraft wild kratts Tortuga map and I was using structure blocks to clone the feet of the ship but when I was working on the build the render in the structure block GUI was glitched like some blocks were rendering transparent randomly here are a few screenshots.

Steps to Reproduce:

1. Place a structure block next to any sort of structure you want to save; make sure the structure is inside the bounding box
2. Set the size and offset of the bounding box so the structure fits inside of it
3. Go inside the structure block's GUI and view/rotate the structure in the structure preview

Expected Results:
You are able to view the structure without any rendering issues.

Observed Results:
The structure preview has many issues rendering, such as invisible blocks; glass and water makes you see through the black background of the GUI.