Storage handling menu in IDE

I did play a little with the Chrome developer tools but I am too new at it to make a good use of it:

• I could set breakpoints and catch the first key pressed in a key combination but I didn't make it in running the code till the second key pressed (e.g., experimenting with Ctrl+Space, for auto-completion, that works fine with the french keyboard).
  
• I tried to modify the code (e.g., adding console.log(key)), saving index.js and experimenting with the shortcuts, but this resulted in my Chrome tab freezing for a long time.
  
  

Anyhow, what I observed is that the Ctrl+` shortcut works fine under Linux with the french keyboard (where the grave accent is not considered as a dead key) but doesn't under Windows or Mac OS (where it is a dead key).