`Ref` and broadcasting issue about zygote.jl HOT 1 OPEN

julia> using Zygote

julia> gradient((x,c) -> sum(evalpoly.(x, Ref(c))), [2.0], [1,2,3])
([14.0], [1.0, 2.0, 4.0])

julia> gradient((x,c) -> sum(evalpoly.(x, Ref(c))), [2.0], [1,2,3.5])
ERROR: DimensionMismatch: array with ndims(x) == 1 >  0 cannot have dx::Number
Stacktrace:
 [1] (::ChainRulesCore.ProjectTo{AbstractArray, @NamedTuple{…}})(dx::Float64)
   @ ChainRulesCore ~/.julia/packages/ChainRulesCore/6DiyF/src/projection.jl:255
 [2] _project
   @ ~/.julia/packages/Zygote/jxHJc/src/compiler/chainrules.jl:189 [inlined]
 [3] map
   @ ./tuple.jl:383 [inlined]
 [4] _project_all(x::Tuple{Vector{Float64}, Vector{Float64}}, dx::Tuple{Vector{Float64}, Float64})
   @ Zygote ~/.julia/packages/Zygote/jxHJc/src/compiler/interface.jl:118
 [5] gradient(::Function, ::Vector{Float64}, ::Vararg{Any})
   @ Zygote ~/.julia/packages/Zygote/jxHJc/src/compiler/interface.jl:149
 [6] top-level scope
   @ REPL[334]:1
Some type information was truncated. Use `show(err)` to see complete types.

julia> Zygote.pullback((x,c) -> sum(evalpoly.(x, Ref(c))), [2.0], [1,2,3.5])  # this avoids projection of final answer
(19.0, Zygote.var"#75#76"{Zygote.Pullback...

julia> ans[2](1.0)
([16.0], 0.0)