As per the Environment section of the issue, Jenkins 2.73, Script Security Plugin 1.31.
This issue occurs in Freestyle with the System Groovy buildstep using a Groovy Command with Sandbox selected. Our actual use case is a script file, but running with a groovy command and sandbox selected is an easier testcase.
From memory Jenkins 1.32 coincides with about version 1.14 (correction - that's too far back - more likely 1.27) of the script security plugin. (I'm not currently VPN'd to work to check.). But the version probably doesn't reveal anything as we previously were able to run without the sandbox, but that is no longer an option when using a script file, something that was forced upon us in the upgrade. I've got a Jenkins 2.71 environment with Script Security Plugin 1.29... and I can reproduce the problem there too.