Croptopia crops on trees do not render correctly

[Robinerra]

What happened?

When using shaders, Croptopia's tree crops make the leaves behind them darker.

I'm pretty confident this is an issue with Iris as it's rendering related and happens with other shaders (less noticeably on some) and resource packs, and not a Croptopia or BSL issue. Although Croptopia itself may be part of the problem so I think the author of croptopia @ExcessiveAmountsOfZombies should be made aware of this issue.

Screenshots

Without shaders:

With shaders:

Relevant log output

https://pastebin.com/9AZPdMU3

Minecraft Version

Fabric 1.19

Iris Version

Iris 1.2.5

Sodium Version

Sodium 0.4.2 build 16

Operating System

Ubuntu 21.10 x64

What is your GPU?

Nvidia GTX 1070 8gb

Java Version

Adoptium 17

Additional context

No response

[Robinerra]

After some more testing these seems to only happen when in direct sunlight, otherwise it renders fine.