The manual scanning software updates itself automatically. Sometimes, a new version shows unexpected behavior.
In this case, it makes sense to revert back to the old version.
These are the steps:
1. In the search box on the taskbar, type Control Panel and select it from the results
2. Select Programs > Programs and Features
3. Press and hold (or right-click) on the program you want to remove and select Uninstall or Uninstall/Change
4. Select Restore previous state of the software
Here is a screenshot of the most important steps. (Shown for the manualWSI DSHOW version but works the same for the other versions as well)