[MC-87624] NBT Tags dont work on tag command with /execute

When i want to tag an specific item with the scoreboard tag command it doesnt work. When i do it myself with

/scoreboard players tag @e add isDropper {Item:{id:minecraft:dropper}}

But when i do this:

/execute @e[name=CAS,type=ArmorStand] ~ ~ ~ detect ~ ~ ~ air 0 scoreboard players tag @e[type=Item,r=1] add isDropper {Item:{id:minecraft:dropper}

it doesnt work.

Thanks for help or for the bugfix!