temp1011

In 1.12 you only need one farm block. If you want it to replant bog earth it must be the managed version.

Seems like the same problem as https://github.com/ForestryMC/ForestryMC/issues/2287

A crash report/mod list would be very useful. Hopefully then it will be easier to work out what the common mods are in these cases that are likely to cause...

Also, I would note from your comment on [this](https://github.com/DimensionalDevelopment/VanillaFix/issues/125) issue that it would seem that vanilla fix is causing problems when leaving a server for you. Perhaps it is also...

Have you tried changing `disableStairSlabCulling` in the forge config?