Steps to reproduce:

1. Login to backoffice.
2. Go to Content / Content structure.
3. Expand Content tree from left side menu.
4. Select random content in Content tree e.g. eZ Platform.
5. Verify edges of right side menu at the bottom (Send to Trash button).

Actual result:

See attachment.

Right side menu at the bottom has too short edge

Expected result:

Right side menu edge at the bottom (Send to Trash button) should be the same like at the upper (Create button).