All blend material instances weather the texture is transparent or not are all slightly transparent for custom blocks. This effect is much less pronounced on the up face. If you look at the 2nd image, the 2 vertical Slabs use alpha_test_single_sided instead of blend and are unaffected.
MCPE-228701
Blend Textures on custom blocks are all slightly transparent.
Resolved
Awaiting Response
0
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response.
Are you certain that this is not a side effect of this issue? MCPE-186373
If not, could you please attach an example addon showcasing the issue?
This ticket will automatically reopen when you reply.
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki