JDK-8327476 broke handling of Ctrl+C. New version of JLine modifies SIGINT handler and therefore breaks normal processing of Ctrl+C.

To provoke the issue, it's enough to call System.console().

I attached SigIntTest.java that demonstrates the problem.
Before commit 0a4eeeaa, the program printed "Shutdown hook called".
Now, it immediately terminates upon pressing Ctrl+C or sending kill -2 to the process.