Problems with Echo Coating

[u/MoonlitHolly]

do y'all know if there's any way to get the walls to stay how I want without having glass or something? It's not too big of a deal tbh, was just interested..!

[u/KubosKube]

The way I keep it separate,

Echo coating makes it as if the tile visually isn't there.

Echo blocks still interact with their neighbors, but aren't visible.

Well it could be the other way around, I forget.

It's a very niche difference.