Modules resulting from functor applications do not inherit their documentation comments

[agle]

The documentation generated by the following produces a documentation page for module M which contains the function signature for funct but not the documentation text.

Module Libmodule.M

val funct : unit

module F (X : sig end) = struct
  (** doc text: print a message *)
  let funct = print_endline "hello"
end

module M = F (struct end)

ocamlc -g -bin-annot libmodule.ml
odoc compile --pkg odocbug libmodule.cmt
odoc link libmodule.odoc
odoc html-generate -o _html --support-uri odoc.support --theme-uri odoc.support libmodule.odocl

Desired behaviour:

The module M has documentation similar to module F as below:

val funct : unit

doc text: print a message

This would be really helpful when constructing an interface by including several smaller components that each are documented independently. Currently it seems like a module type needs to be defined and applied to the result of the functor application in order to generate documentation for it, for example as done in ocamlgraph.Graph.Pack

I tested with ocaml 5.3 and odoc 3.1; this bundle just contains the above code and script repro.tar.gz