In Minecraft version 1.12.2, under the modpack Infinity Evolved: Reloaded, the water tanks and irrigation channels are most of the time failing to connect to eachother. Using the same wood when attempting to multi-block the structures, they fail to connect. It is a multiplayer server. Over 180 mods in the modpack. Sometimes they connect, most of the time they do not.

Closing since we are moving to 1.16.