Choose Source for Value:
Groovy Script:
return [
"A",
"B",
"C",
"D",
"E",
"F",
]

Choose Source for Default Value:
Groovy Script:
return [
"C",
"E",
"F",
]

In the "Build with Parameters",
I expect to see "C", "E", and "F" are selected,
but only "C" is selected.