BUGGY BEH: When "Show all items" is selected, then the yangmenu is exited and entered again, the "Show all items" box is showed for a moment.
1. Clicki network-topology, change to form view.
2. Click yang menu next to topology in the form, click Add list item. Again click yang menu, click Add list item.
3. Click yang menu next to topology in the form, click "Show all items". Exit the menu.
4. Click the yangmenu again.
BUGGY BEH: "Show all items" box is showed for a moment.