Using JLD in a module, when it's not loaded in Main, causes issues

[mhauru]

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When trying write a storage module that would internally use JLD, I ran into the following weird behavior:

julia> using JLD
julia> save("d.jld", "d", Dict("a" => 1.0))

then restart Julia to clear the workspace so that JLD is no longer loaded and go

   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.1.0 (2019-01-21)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

julia> module Mod
       using JLD
       @show typeof(load("d.jld", "d"))
       end
┌ Warning: type JLD.AssociativeWrapper{Core.String,Core.Float64,Base.Dict{Core.String,Core.Float64}} not present in workspace; reconstructing
└ @ JLD ~/.julia/packages/JLD/1BoSz/src/jld_types.jl:703
typeof(load("d.jld", "d")) = getfield(JLD, Symbol("##JLD.AssociativeWrapper{Core.String,Core.Float64,Base.Dict{Core.String,Core.Float64}}#363"))
Main.Mod

This can be fixed by just loading JLD in Main:

julia> using JLD

julia> module Mod
       using JLD
       @show typeof(load("d.jld", "d"))
       end
WARNING: replacing module Mod.
typeof(load("d.jld", "d")) = Dict{String,Float64}
Main.Mod

This seems related to https://github.com/JuliaIO/JLD.jl/issues/216, but I lack the understanding to judge whether it's actually a duplicate.

[bienpierre]

Hello, Did you find a workaround? Regards

[mhauru]

It's been 3 years, I can't recall at all, sorry.