Can't spawn minecarts with rotation via chat or function but with a command block

If I try to summon a minecart with rotation, it rotates back instantly if I execute the command in chat, in a function or using a sign with clickEvent. But if I summon it with a commandblock, it works perfectly...

Example command to reproduce:

summon minecraft:chest_minecart ~5 ~ ~ {NoGravity:1b,Invulnerable:1b,CustomDisplayTile:1b,DisplayOffset:16,Rotation:[180F,50F],OnGround:0b,DisplayState:{Name:"minecraft:cobblestone"}}

Sign with clickEvent

setblock ~ ~1 ~ oak_sign{Text1:"{\"text\":\"Click\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"summon minecraft:chest_minecart ~5 ~ ~ {NoGravity:1b,Invulnerable:1b,CustomDisplayTile:1b,DisplayOffset:16,Rotation:[180F,50F],OnGround:0b,DisplayState:{Name:\\\"minecraft:cobblestone\\\"}}\"}}"}