NbMenu - bug when adding new items.

[seanbotha123]

Issue type

I'm submitting a ... (check one with "x")

• bug report
• feature request

Issue description

Current behavior:
When adding a new child item to a menu, the siblings get moved down and out of the wrapper.

Expected behavior:
Do not move the item out of the wrapper, rather expand wrapper to keep showing all menu items.

Steps to reproduce:
https://angular-8x61bv.stackblitz.io/ - click on ADD NEW button. Observe how Child Item 2 gets moved out of the view.

code - https://stackblitz.com/edit/angular-8x61bv

[nnixaa]

Hi @seanbotha123, many thanks for reporting!

[nnixaa]

Have to postpone it until the new menu component release.