Query of Query doesn't return correct results when UPPER() is used

STEPS TO REPRODUCE:
Query the results of an existing query

Example table data:
id,title
1,A
2,B
3,C
4,A
5,C
6,C
7,A
8,A
9,A

EXPECTED RESULT:
Return only distinct (different) values: A,B,C

*ACTUAL RESULT: *
Returns A,B,C,A,C,A

Note
I noticed that QoQ returns correct data if data on column that distinct is used are one after the other. Example:
id, title
1, A
2, A
3, A
will return only A

Gist: https://trycf.com/gist/068c92daa6b103e2d5cbcbca4cc72954/lucee5?theme=monokai