Expected behavior

When creating a slim sidebar with collapsable groups when clicking on a group title, it opens the sidenav and the group as expected. Closing the group closes the sidebar also as expected.

Actual behavior

However if I open multiple group then close one, the title of the groups disappear.

It works fine, as expected when I open the sidebar with the toggle slim button then I open and close the groups

Resources (screenshots, code snippets etc.)

Using the exact same code as the vue documentation produces this screenshot https://ibb.co/prBmCJ5