Hi David,
It seems the condition is not behaving as intended in scenarios above due to the use of quotes in your conditions. Based in the configurations above the search term is "plane" (including the quotes) which is why you are getting incorrect results.
I retested the condtions as follows:
- plane does not contain plane. The answer is no. That's correct
- plane is flying does not contain plane. The answer is no. That's correct
- plane plane plane plane does not contain plane. The answer is no. That's correct
- car, plane, train does not contain plane. The answer is no. That's correct
Also we have update the docuementation to remove the backticks from the examples to ensure it matches the correct functionality