The OBD application window is opening in half of the monitor screen. Although the Ribbon bar is getting stretched all over the screen. View or Screen Resolution did not help to resolve the issue.
SolutionOpenBuildings Designer application windows may sometimes not appeared with maximum aspect ratio.
To resolve this issue- go to Configuration Variables window dialog and search for _USTN_HOMEPREFS
Next, browse to the assigned location in your Windows File Explorer and delete/ rename the folder named 10.0.0 (You can rename the folder like 10.0.0-Old / 10.0.0-temp )
After that restart OpenBuildings Designer and verify that the application window now displays normally.