Preconditions:

• Added lots of folder content or any other for example under Ibexa DEP.

Steps to reproduce:

1. Log in to back office.
2. Go to Content / Content structure.
3. Edit Ibexa DEP content.
4. Add collection block to landing page.
5. Edit collection block settings.
6. Select contents mentioned in preconditions in collection block.
7. Expand 'Selected item(s) sidebar after selecting contents.
8. Verify displayed sidebar menu

Actual result:
See attached screenshots.

1. Selected items sidebar is not properly displayed / adjusted to page elements.
2. User is not able to click on 'Confirm' or 'Cancel' button on sidebar menu (elements are covered by sidebar menu).

Expected result:

1. Selected items sidebar is properly displayed.
2. User is able to click on 'Confirm' and 'Cancel' buttons.

Note:

1. Expand selected item(s) sidebar button is not properly formatted.
2. After expanding selected item(s) sidebar the graphics for particular contents is not properly formatted (currently graphics are too big, should be lowered). Please have a look on invision mockup: https://projects.invisionapp.com/share/E811PJGMSF76#/screens/458337436_UDW-3-6
3. Scrolling selected items in sidebar menu is not working.