Windows 8 & Windows 10 + Unexpected Output Window Size
This applies to Windows 8, 8.1, 10 and MXWendler version 5.0 and above
You want to open an output window but the output window does not appear at the expected location and does not have the expected size.
In 'Display' in 'System Settings' check the setting 'Change the size of app, text, and other items'. Set the slider to 100%.
If the setting is not exactly 100% Windows reports virtual monitor sizes to applications to equalize high-resolution monitor scaling.