False "missingno" on a lever given by /give command

I'm trying to get a lever that can only be placed on magenta wool through the /give command, and no matter what i do... i get "can be placed on missingno" which i went into adventure mode to test and see if it was a fancy name for magenta wool... and it wasn't. This will be fixed in the next 3 months, and if it's not a glitch, and i can't make levers that can only be placed on wool... then it will be a change in 1.12.