When you open a dialog box the dialog box will disappear. The problem is the dialog box is still opened somewhere and is waiting for input.
if you Right Mouse Button (RMB) over the desktop you can select "nView Properties", which brings up a dialog box for "nView Desktop Manager".
Select the "Windows" tab.
Prevent windows from opening off-screen": ENABLE (checked)
Dialog box repositioning:
Reposition dialog boxes on: Move to application display
Center dialog box on display: ENABLE (checked)
Also, please delete, when it happens, in Drivename:\Program Files\Bentley\ProStructures\V8i_S6\AutoCAD 201x\Localised\Country setting you used\Temp\Metric all files with content *wnd* (Wnd=Window).
For Prostructures on Microstation its in
Drivename of installation:\ProgramData\Bentley\ProStructures V8i S8\WorkSpace\ProStructures\Localised\Country setting you used\Temp\Metric
That sets all dialogs to default position, as thoose files store the dialog positions.
It´s mostly needed to delete these files when you switch monitors or resolution.
Or use some extra downloadable Tools, there is a tool include that resets all dialogs to default position.
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