Vertical stacking on WSL (Ubuntu subsystem on Windows 10) does not work.

[Yam76]

See this issue.

To repeat:
Given the following code:

open Notty
open Notty_unix

(*
 * ocamlbuild -pkg notty -pkg notty.unix basics_wow.native
 *)
let () =
let wow = I.string A.(fg lightred) "Wow!" in
I.(wow <-> (void 2 0 <|> wow))
|> Notty_unix.eol
|> Notty_unix.output_image

and the following two commands:
ocamlbuild -pkg notty -pkg notty.unix basics_wow.native
./basics_wow.native

I get this image:

I'm on Windows 10, running this through the terminal for my Ubuntu subsystem.

[nnsun]

I had the same issue but after upgrading to WSL 2, everything seems to be working correctly.