If the timeline scrolls in vertical direction instead of along the timeline, it's usually the mouse driver that keeps trying to help those users who do not know how to use a mouse wheel. Wings Vioso RX itself is able to process the mouse information correctly and properly and does not need any assistance by drivers or other software.
Solution: Solve this problem by telling the mouse driver that Wings Vioso RX knows what it's doing. For this purpose there is usually a list to deactivate the mouse wheel emulation for individual programs in the (Microsoft) mouse driver. As an alternative you can change the mouse wheel behavior in general, e.g. for Logitech drivers to "MS Office compatible scroll only" and "Scroll in active window only".