Well I can't say I solved the root of the issue, I think I have found a viable workaround detailed in my latest update to the original post. Thanks again for all the help!

In reply to Re^8: Running a perl script as a system command in another thread hangs while main thread reading from STDIN by rmahin
in thread Running a perl script as a system command in another thread hangs while main thread reading from STDIN by rmahin

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