Menubar not showing on Windows

[mrpoussin]

Hello,

I've downloaded the latest sources from Github,
Used the command prompt to run :

>npm install
>npm start 

This was the result :

[metalsmith-watch] ✓ Live reload server started on port: 35729
[metalsmith-serve] serving C:\ParticleDoc\build at http://localhost:8080
[metalsmith-watch] ✔︎ Watching ..\src\content\**\*.md
[metalsmith-watch] ✔︎ Watching ..\src\assets\less\*.less
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\reference.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\datasheet.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\support.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\suppMenu.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\quickstart.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\community.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\workshops.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\landing.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\layouts\main.hbs
[metalsmith-watch] ✔︎ Watching ..\templates\partials\**\*.hbs
[metalsmith-watch] ✔︎ Watching ..\src\assets\js\*.js*
[metalsmith-watch] ✔︎ Watching ..\src\assets\images\**\*
[metalsmith-watch] ✔︎ Watching ..\config\device_features.json
[metalsmith-watch] ✔︎ Watching ..\api-service\lib\**\*.js
[metalsmith-watch] ✔︎ Watching ..\config\redirects.json

It seems that the menubar won't show up.

image for reference :https://imgur.com/Qhha704

I've tried the same on an ubuntu machine and it works fine.

Is there something i'm missing ?