I publish tool locations for preinstalled tools on my windows-based swarm clients using the command-line args, and until recently this worked fine (presumably with previous versions of jenkins and plugins)

Today (haven't used these jobs in a while) I see this in the output (I run "echo Path is %PATH%" in a Windows batch step)

>echo "Path is e:\jenkins\jdk\JDK_1.7/bin;c:\tools\apache-maven-3.0.5\bin\;e:\jenkins\jdk\JDK_1.7/bin;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.0\;E:\cygwin64\bin;E:\jenkins\bin;C:\Program Files\Puppet Labs\Puppet\bin;C:\Program Files\SlikSvn\bin;e:\jenkins\ant\apache-ant-1.9.7\bin;C:\Program Files (x86)\MSBuild\12.0\Bin;e:\jenkins\maven\apache-maven-3.2.5\bin;e:\jenkins\jdk\JDK_1.8\bin;;c:\tools\;C:\Windows\Microsoft.NET\Framework\v4.0.30319"

%PATH% is prepended with the JDK bin path which is incorrect. The path shows up correctly on the slave's Configure screen, see screenshot.

I don't know for certain whether it is the swarm plugin or jenkins tool provider core doing this.