Calendar disappear after change pages and go back to calendar page

[WOWKWB99]

Hi all, I have an issue about the calendar widgets.
At first load the widget load correctly, and I try to move into another page and go back to calendar page, and the calendar disappear. I try to debug in the browser console there is no error appear. I need to refresh the page to see the calendar again. Anyone have the same issues?

Thanks!

[WOWKWB99]

Already found the answer and the issues still open : #75