JSON_ARRAYAGG bug phenomenon

-- #1

-- print [{}] - VALID

SELECT JSON_ARRAYAGG(JSON_OBJECT());

-- #2

-- print [NULL] - INVALID ???

SELECT JSON_ARRAYAGG(JSON_OBJECT())

WHERE FALSE;

The code #2 expects no rows selected, but it actually selects a single row with a [NULL] value.
I don't see this in other functions, but I see this error in the JSON_ARRAYAGG() function.