Steprange indexing with Block not working

[dlfivefifty]

julia> Block(K)[1:2:3]
ERROR: MethodError: no method matching getindex(::Block{1, Int64}, ::StepRange{Int64, Int64})

Closest candidates are:
  getindex(::Block, ::CartesianIndex{0})
   @ BlockArrays ~/.julia/packages/BlockArrays/VccC2/src/blockindices.jl:59
  getindex(::Block{1}, ::Base.Slice)
   @ BlockArrays ~/.julia/packages/BlockArrays/VccC2/src/blockindices.jl:209
  getindex(::Block{N}, ::Integer...) where N
   @ BlockArrays ~/.julia/packages/BlockArrays/VccC2/src/blockindices.jl:206
  ...