Zend certified PHP/Magento developer

Process not showing in Process Explorer, even though it’s running

Something strange is happening, I am running the game “Sheep dog ‘n’ wolf” via the SheepD3D.exe executable.

While it is running I alt-tab and open SysInternals’ Process Explorer (latest version). The executable is nowhere to be found. Filtering by its name yields no results. I can’t drag the “find window’s process” crosshair over it, since it’s so old it can only run in full screen.

However, when I open Process Hacker, the executable is plainly visible there:
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controversly:
enter image description here

Does anyone have any idea what’s going on here that ProcExp can’t see the exe?