Mousetrap doesn't respond to the keyup event in some conditions, but the document.addEventListener works.

[KoStard]

In my project https://github.com/KoStard/Pharmony in view.js, in some conditions, when popup window is visible, mousetrap doesn't respond to esc keyup, but if I use document.addEventListener('keyup', ()=>{...}) I get the event. Is there any difference between these methods, and how can I avoid this bug?