Missed a thread, needs to be installed in Engine.
This is a continuation of JENKINS-38711 and was found in a case where Windows agents were disconnecting without leaving any errors in the logs.
slave.jar should install UncaughtExceptionHandler
Code changed in jenkins
User: Rebecca Ysteboe
Merge pull request #252 from rysteboe/uncaught-exception-handler
JENKINS-49415 Add additional UncaughtExceptionHandler
Merged into core towards 2.112.