[helfire]

Java 12 is not a long term support release and will only be supported until September 2019 (so don't switch to it in 2 years :).

Interesting to see the faster pace releases to get feedback on features, but many major libraries are just getting Java 11 support.

[cogman10]

This is mostly due to Java 9 breaking everything.

Post Java 11, I doubt you will see the same problems you did with going from 8 to 9 or 11