tp rotation Doesn't work as it should

I was trying to make a circle generator and for that I placed an armor stand on top of a command block with this command
{color:#999999}execute as @e[type=minecraft:armor_stand] run tp{color} {color:00D8D8}@s{color} {color:EEEE00}~ ~ ~{color} {color:#08CF08}~0.5 ~{color}
In theory, the entity should start rotating, but instead i just ignores the ~ in the rotation parameter and rotates to {color:#08CF08}0.5 ~{color}, like if there was no ~ in the command
I tested it using different values and it's like not using the ~
There is no error outputs in the command block, and I know that´s the right way but it just Doesn't work. in 1.15 it works perfectly, but here it just don't
Also, if I should change anything about this bug report, let me know