Testing with a similar structure as shown in your screenshot
![](https://forum.devs.beer/assets/files/2023-06-22/1687433350-276634-image.png)
disable-REAL_TRANSPARENT: false
![](https://forum.devs.beer/assets/files/2023-06-22/1687433176-752339-image.png)
disable-REAL_TRANSPARENT: true
![](https://forum.devs.beer/assets/files/2023-06-22/1687433235-771279-image.png)
Completely disabled ItemsAdder and its resourcepack:
![](https://forum.devs.beer/assets/files/2023-06-22/1687433266-117335-image.png)
So this is a normal Minecraft behaviour, nothing to do with ItemsAdder.
Chorus Plant blocks faces are not rendered completely when you're spectating inside other blocks.
It's how the game works.