WebSocket connections are closed if context-menu is dismissed

[MayamaTakeshi]

Hello, I am seeing a curious thing when using vue-context-menu.
Maybe I am doing something wrong, but when I dismiss the context-menu by clicking outside of it, any WebSocket connections that I have are closed (this doesn't happen if I click on an item in the context-menu).
This repo shows this behavior:
https://github.com/MayamaTakeshi/vue-context-menu-test
If you want to test with it:
npm install
gulp
firefox index.html

[vmaimone]

hi there,

it turns out firefox registers a 'click' event and a 'contextmenu' event when right clicking. this was causing some buggy behavior. I've made a new release that seems to fix the issue in your test repo (thank you for providing that, btw).

I am going to leave this issue open for now, as I am still having disconnect issues with webpack dev server in firefox and cannot tell if this is related.