The texture between a waxed copper grate and a not waxed copper grate do not disapear when placed next to each other

The texture between 2 translucent blocks disappears when those 2 blocks are placed right next to each other, this happens between 2 waxed copper grates, and also between 2 non-waxed copper grates as it should, but this does not happen if one of the 2 copper grates is waxed and the other isn’t.