Scheduler Dialog is not popping up in front of other components

I am using the example Blazor Scheduler component and using all the code from the example as well. But when I click on a cell or on an activity to add or edit an appointment, the Dialog popup is not totally in front. This feels like a z-index issue? But I have no idea where to apply it.
This happens on Edge and on Chrome.

See my example below:

Hi @aptego,

Can you reproduce this problem here? To me it looks like this

Overall it seems to be some CSS conflict you can inspect the navigation HTML elements with your browser's developer tools and check if some external CSS applies a z-index on them. Normally it should look something like this:

Thank you @korchev

Indeed, it was external CSS code that caused this. If anyone ever has this issue, in my case it was caused by a component's sticky position :
image

The issue has been resolved and works as expected now.