Inconsistent SIDE NAV UI behaviour

[swift2512]

1. Clicking on 'Maintenances' switches to Maintenance View, collapses 'Assets' navigation menu and unselects it.

2. Clicking on 'Deleted' switches to Deleted View, but menu entry doesn't change to selected.

3. Clicking on 'Asset Maintenance Report' switches to Asset Maintenance Report View, but menu entry doesn't change to selected.

Settings menu (side nav)

1. Editing /creating Custom field or fieldset collapses Settings menu and removes 'selected' formating from it. (= Works differently from Assets menu)
2. Editing/creating Status label, collapses Settings menu, removes 'selected' formatting from it and opens 'Assets menu'
3. Editing/creating anything of these, collapses Settings menu, removes 'selected' formatting from it, and also remove 'selected' from the entry itself.