Should `esc` work for the macro name of a `macrocall` expression?

General Usage
1

It seems that a macro returning a :macrocall expression with escaped macro name does not work whereas a :call expression with escaped function name is no problem:

julia> macro a(ex::Expr) Expr(ex.head, esc.(ex.args)...) end
@a (macro with 1 method)

julia> @a one(0)
1

julia> @a @inbounds 0
ERROR: LoadError: syntax: "esc(...)" used outside of macro expansion
Stacktrace:
 [1] top-level scope
   @ REPL[3]:1
in expression starting at <macrocall>:0
Same example with dumped expressions 
julia> macro a(ex::Expr) escex = Expr(ex.head, esc.(ex.args)...); dump(escex); escex end
@a (macro with 1 method)

julia> @a one(0)
Expr
  head: Symbol call
  args: Array{Any}((2,))
    1: Expr
      head: Symbol escape
      args: Array{Any}((1,))
        1: Symbol one
    2: Expr
      head: Symbol escape
      args: Array{Any}((1,))
        1: Int64 0
1

julia> @a @inbounds 0
Expr
  head: Symbol macrocall
  args: Array{Any}((3,))
    1: Expr
      head: Symbol escape
      args: Array{Any}((1,))
        1: Symbol @inbounds
    2: Expr
      head: Symbol escape
      args: Array{Any}((1,))
        1: LineNumberNode
          line: Int64 1
          file: Symbol REPL[3]
    3: Expr
      head: Symbol escape
      args: Array{Any}((1,))
        1: Int64 0
ERROR: LoadError: syntax: "esc(...)" used outside of macro expansion
Stacktrace:
 [1] top-level scope
   @ REPL[3]:1
in expression starting at <macrocall>:0

julia> @macroexpand1 @a @inbounds 0
Expr
  head: Symbol macrocall
  args: Array{Any}((3,))
    1: Expr
      head: Symbol escape
      args: Array{Any}((1,))
        1: Symbol @inbounds
    2: Expr
      head: Symbol escape
      args: Array{Any}((1,))
        1: LineNumberNode
          line: Int64 1
          file: Symbol REPL[4]
    3: Expr
      head: Symbol escape
      args: Array{Any}((1,))
        1: Int64 0
:($(Expr(:escape, Symbol("@inbounds"))) $(Expr(:escape, 0)))

Is there a reason for this?