[1.15.2-4.0.0] Grass "overflow" overlay missing

[Foxtrek64]

Mod Version & Build Number
ConquestReforged-mc1.15.2-4.0.0-498

Forge Version
1.15.2 HD U G6

Describe the bug
When a grass block and some other blocks are adjacent, a grass texture is applied to the edge of the cobble block to simulate grass "overflowing" onto the cobble. This shows as a semi-transparent green tile instead.

Sometimes, looking at the texture at the right angle (usually when applied to vertical surfaces) will render the overlay correctly.

Crash Log
N/A

Screenshots/Video Grass adjacent to cobble:

Grass next to stone brick (vertical surface):

System Information (optional)
Total RAM: 64gb Allocated RAM: 6gb CPU: Intel I9-9900K GPU: NVidia GeForce RTX 2070 Super

Additional context
Horizontal surfaces do not appear to be affected by viewing angle in the same way as vertical surfaces. For vertical surfaces, the viewing angle must be very shallow (almost directly above or below) in order for the texture to render properly.

[HIPPOKLEIDES]

do you have antialiasing or anistropic filtering enabled?

[Foxtrek64]

I have anisotropic filtering enabled at level 16 and antialiasing off currently.

[HIPPOKLEIDES]

make sure those are all off. they're broken optifine features

[Foxtrek64]

After turning both off, I can confirm that the issue has been resolved.

It also resolved a transparent water issue I had felt would be related since both were affected by viewing angle.