ngql中的count使用表达式，统计数量不对

(czp@nebula) [nba]> match (v:player) where v.age in [41,42,43] return count(v.age)
+--------------+
| count(v.age) |
+--------------+
| 4            |
+--------------+
Got 1 rows (time spent 16552/16874 us)

(czp@nebula) [nba]> match (v:player) return count(case when v.age in [41,42,43] then true end)
+------------------------------------------------------+
| count(CASE WHEN (v.age IN [41,42,43]) THEN true END) |
+------------------------------------------------------+
| 4                                                    |
+------------------------------------------------------+
Got 1 rows (time spent 15062/15367 us)