When the preference "Use mouse wheel for event volumes and fades" is activated, Ctrl + mouse wheel scroll does not always zoom in when using the Range Selection Tool (2). It does not zoom if the cursor is on top of an event, only if the cursor is in empty space.
Confirmed with 2 different mouses (Logitech and Steelseries) on Windows 7 and windows 10, Cubase 10 and Cubase 10.5