sidebar menu issue

[premmd94]

only one dropdown should open. when I click any one dropdown another open dropdown should close
in sidebar

How to solve this issue

[xidedix]

The previously opened dropdown section closes after clicking on a new item only, as long as there was a selected item in the opened section.
We tried automatic dropdown close once, and abandoned the idea - it was causing too many animations on sidebar-nav, visually unacceptable.

This feature will be available as an option in the upcoming CoreUI v3 anyway.