Using VulkanMod in combination with Lithium causes any face that is adjacent to a farmland block to be transparent, eg:

Without Lithium, this does not happen (so yes, it is not VulkanMod's fault) and seems to be a compatibility issue.

Maybe it's related to this line in the logs?

[14:37:28] [main/WARN]: Method overwrite conflict for method_10153 in vulkanmod.mixins.json:chunk.DirectionMixin from mod vulkanmod, previously written by me.jellysquid.mods.lithium.mixin.math.fast_util.DirectionMixin. Skipping method.

Either way, the full log is attatched.
latest.log

Cheers.

Commit 863c6da should have fixed this issue.