Multithreading error

[APT64]

Hi, I have a problem with multithreading. My first thread is accessing JavaGateway to call a function, the called Java function is waiting for user input.
My second thread also calls a Java function, but to output some user information.
After the input is received in the first thread, a crash occurs.

[Hyukjin Kwon]

Thanks for reporting this. Would you happen to have a reproducer please?