The columnList property on a query object looks, acts, and dumps as a string, but I cannot use list or string member functions on it. List and string member functions should always work on any variable whcih Lucee will allow to work with the "headless" versions of the same function.
Adobe ColdFusion handles this correctly and does not throw an error.
Output should be
Actual output is
TryCF example (suitable for testing Adobe CF as well)