StaticArray failure with broadcast: Dimension is not stable, please file a bug

[Deduction42]

So I tried using StaticArrays inside a ComponentArray. It constructed, but then I got problems with broadcasting.

Everything works with a regular vector

julia>ax = Axis(a=1,b=2,c=3)
Axis(a = 1, b = 2, c = 3)

julia> ca = ComponentVector(randn(3), ax)
ComponentVector{Float64}(a = -0.026510360005660757, b = 1.6198025264096019, c = 0.5024437339679514)

julia> ca.*0
ComponentVector{Float64}(a = -0.0, b = 0.0, c = 0.0)

Static Vector constructs but produces an error saying that the dimension is not static.

julia> cas = ComponentVector(SVector{3}(collect(ca)), ax)
ComponentVector{Float64, SVector{3, Float64}, Tuple{Axis{(a = 1, b = 2, c = 3)}}}(a = -0.026510360005660757, b = 1.6198025264096019, c = 0.5024437339679514)

julia> cas.*0
ERROR: Dimension is not static. Please file a bug.
Stacktrace:
 [1] error(s::String)
   @ Base .\error.jl:35
 [2] copy
   @ C:\Users\me\.julia\packages\StaticArrays\MSJcA\src\broadcast.jl:59 [inlined]
 [3] materialize(bc::Base.Broadcast.Broadcasted{StaticArraysCore.StaticArrayStyle{…}, Nothing, typeof(*), Tuple{…}})
   @ Base.Broadcast .\broadcast.jl:867
 [4] top-level scope
   @ REPL[5]:1
Some type information was truncated. Use `show(err)` to see complete types.

I'm guessing that ComponentVector implicitly assumes a regular vector somewhere so when instantiating, the length is unintentionally dropped?

[Deduction42]

This is a duplicate of #183