Slow and bugginh modal showing and hiding

[Calendee]

There’s been a bit of back and forth on this already. Check for solutions in this post:

Modal background bug

Hi, I think there is a bug when you open a modal, sometimes you can see the content behind the modal. The background-color of the modal seems not to be applied (it should cover the content behind the modal). However when you resize the windows, the modal cover the whole content. I saw this in Chrome browser. It will work well after resizing the window. You can see this behavior here.