SSH Job does not automatically use the correct command to create Environment Variable "SCHEDULER_RETURN_VALUES" on Windows System

Current Situation
The command to create Enviroment Variables on the target system is determined automatically or it is configurable with the "preCommand" Option.
However, on Windows Systems the command to create the environment variable "SCHEDULER_RETURN_VALUES" is not correct when it is set automatically, the linux specific "export" command is always used.
The error does not occur if the option "preCommand" is set in the Job configuration.

Desired Behavior
All environment variables have to be set correctly when the targets operation system is determined automatically.

Workaround
Configure the Option "preCommand" with the correct command for the target system.

<param  name="preCommand" value="set %s = %s" />