Hey, not checked here in a while but noticed you mentioned OTG. The water/lava bug is fixed, i haven’t seen a lighting issue in a while, this bug with biome groups just got fixed (will be included in the next release), this is also fixed, as is this, and this as well as lots of other things. There are tons of new features on the forge side of things, too.
There are also some nice new features even if you only use the Spigot version, like spawning entities in bo3s, teleporting to biomes with a command even when the terrain is not generated and allowing the other vanilla village types to be used in biomes (Taiga, Savanna).
1.12 version should be out in a week or two.