On Linux, the primary implementation of Process::stop() is calling proc_terminate() with TERM signal.
This effectively kills the process but usually not its child processes.

On Windows, however, taskkill command with /T switch is used so whole process sub-tree is killed.

I found that the taskkill command for Windows platforms was added here: symfony/process@1eb5593#diff-9a01fc0e340da4c3f1e4a16029a63977R626 .
But the commit message says nothing about any need to kill the whole process tree:

[Process] Make Process::start non-blocking on Windows platform

Is there any reason for this inconsistency?