Yes... and was repeatable -- using iTerm. Shell script didn't do anything but a bunch of parsing and some file IO (fileVault and other disk security is OFF, including boot security).
Ran script with bash -x (so all lines are output as they run), parsing a fairly large file (about 7000 lines, 1.5MB) and script had about 200 code-lines/input-line -- so appx. 140,000 lines of output scrolling. The script is fairly CPU intensive; about 30-40% on 4/4 I7 cores with scrolling; about 15% on 2/4 cores no scrolling.
If I run the script, so that there is no output to screen (default behavior of the script and of course, without -x switch) no KP. -x switch = KP.
Worth noting: heavy usage (coding, video play, music) since my original post (Oct 1 until this one Oct 8). No KP at all... At least I can repeat now... So when patch comes perhaps can really test.