We have recently found a bug in our development environment that causes the message dialog window to be displayed off-screen with some combinations of using dual monitors on Windows 10 machines running ProSelect 2019r1.x. This is related to the new High-DPI support in this latest release of ProSelect.

This results in ProSelect appearing to become stuck when it is actually waiting for you to selected an option from the hidden message window. Pressing the Escape or return keys will close the hidden window and restore control to ProSelect. (Note: Escape is the Cancel operation and Return selects the default button operation in the dialog window.)

The problem only seems to occur when you have positioned your second monitor to be on the left side of the main screen with its top edge above the top edge of the main screen. So, in the Display Properties window adjusting the relative position of screen 2 so its top edge is below the top edge of screen 1 resolves the problem.

In ProSelect 2019r1.7 update and newer, we have added a fix for this issue.