Boostrap 4 collapsible menu dont work with webix

Webix JS
#1

Hi team,

When i mix boostrap 4 and webix, the collapsible menu don’t work :
https://snippet.webix.com/nqs7aohi

if i remove the webix ui, it works :
https://snippet.webix.com/l4em4ww3

What’s wrong ?

#2

Hello,
In your original example you added to div container style position:absolute because of it the menu cannot be collapsible:
https://snippet.webix.com/m13rhotj

#3

Ok, you help me to solve it with adding fixed-top class to the navbar

https://snippet.webix.com/xgsln6iq

Thank you very much x4 @annazankevich