REG: Showing and disposing a native print dialog makes the main frame inactive, Win32

I have a frame with few buttons on it. On clicking one of the buttons, I am bringing up the native print dialog. Once the dialog is shown, I am pressing 'ESC' and the dialog is disposed. After that, the frame becomes inactive and focus does not come back to the same component automatically. I would expect the frame to be active and focus should remain with the same component which brought up the dialog.

This is a regression in Mustang introduced in b53. This is reproducible only on Win32 and not on XToolkit. It works fine on Tiger-FCS and Mustang-b51.

Run the attached application. Press the button. A native print dialog will come up. Press 'ESC'. Check the main frame. If it is not active, the bug is reproduced.