This article describes how to fix issues you may encounter while trying to use screen capture on Windows 10 and a version of ScreenSteps Desktop prior to 4.2.2. In version 4.2.2 all known causes of this bug have been fixed. You can download the latest version from the downloads page or by checking for updates within the desktop software.
Windows 10
When trying to capture a screen shot the screen will resize if more than one monitor is attached to the computer and the zoom setting for the monitors is not the same. The workaround is to set the zoom setting to the same value for both monitors.
Right-click on desktop and choose "Display settings"
Make sure both zoom settings are the same
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I had this same issue with the zoom the same, but running different resolutions on multiple monitors. When I set both monitors to the same resolution, the issue stopped. One was set to 2560 x1440 and the other 1920 x1080.