....another small bug.
After thinking about picking up a new skill in career mode (exotic ranged weapon), changed my mind and went to the Karma/Nuyen tab to delete the Karma expenditure. This usually resets whatever skill/attribute Karma was spent on to the original value (in this case setting the rating to 0 for the skill), The Karma spent was returned, but neither the skill or the rating was removed from the character's skill list. Even refreshing the list did not remove it. I did not save the character at any time and even after exiting (clicking "No") and opening the file up again, the skill was still there.
I can find no way to remove it other than going to the backup of the original build version, saving it to career mode (overwriting the broken file), and re entering all the Karma/Nuyen awards and expenditures for the last several months all over again