Solved Brick foundation decaying on my server?

It wasn't decaying before the recent update...

 

You mean stone? Stone decays just like every other tier and follows the same rules: 100% decay - 25% decay for each directly linked foundation (-33.33333% for triangles). The foundations need to be on the same level. In a 3x3, the center tile gets zero damage... corner tiles get 50% damage and all other tiles get 25% damage.

You can use my NoDecay plugin to stop decay on any or all tiers.