Problem Description

Dialog box does not open when icon selected, there are no error messages visible, it happens with every file, it just does not appear on the screen.

Steps to Resolve

Click on the tool/icon in question - for example the References icon
If it does not appear, go to the Window menu and select from the drop down list
If it still does not appear, make sure the dialog in question has focus (by selecting in Windows menu)
Press ALT + SPACE and the context menu should appear for the dialog
Press M on the keyboard or select Move using the mouse (this may be different for foreign languages)
Use the Arrow keys on the keyboard to move the Dialog into view (try all directions until outline of dialog appears)
Left click in the view to accept and the dialog is visible again
See following video showing this...

Alternative Solution:

File > Settings > User > Preferences > Look and Feel > select Auto-Focus Tool Settings

Original Author:

Conor King