CustomName using combound tag (such as '[{"text":""},{"text":""}]') will spawn a wrong characters name
example : using command /data modify entity <uuid> CustomName set value '[{"text":"1","color":"#0100ff"},{"text":"2","color":"#010002"},{"text":"3","color":"#ffff02"},{"text":"4","color":"#ff0002"},{"text":"6","color":"#01ff02"}]' to modified the armor stand's CustomName ,expect is "12346" but got "123462346"
find this bug has beed fixed at MC-179883