I don't think that's a worthwhile distinction. All software bugs are human errors, since the machine is correctly following the human programmer's incorrect ins

I don't think that's a worthwhile distinction. All software bugs are human errors, since the machine is correctly following the human programmer's incorrect instructions; whether that's at the level of assembly instructing the CPU; or a higher level like Wordpress instructing the PHP interpreter; or an even higher level of a document hosting solution instructing Wordpress.