[MC-121598] Armor stands move wrongly when summon with motion nbt and teleport it

1. Put

 /execute as @e[type=armor_stand,limit=1,sort=nearest] at @s if block ~ ~-0.1 ~ minecraft:redstone_block run teleport @s ~0.2 ~ ~

in repeating-commandblock and active it
2. Summon an armor stand with Motion tag. Ex:"/summon minecraft:armor_stand ~1 ~ ~

{Motion:[0.0,0.5,0.0]}

It move wrongly when it is teleporting, its Y position seems to be under 0.5. But it become normal when it don't teleport.