Multiples calendars on the same page

Hello,

I have an issue. I put multiples calendars on the same page, in differents tabs, to choose witch category is displayed.

But if i click on an event date in the first calendar, then i click on an event on the second, it’s bugged, like the modal is flashing and if i try to close the modal, i need to click on the exit button multiple of times.

I can’t link the page since its a stagging site with password.

But do you have any way to fix that ?

Thanks and have a good night