It’s been forever in Cubase: you move the mouse locator on the time ruler, going from left to right, trying to locate a certain specific point in time. While you are doing this, suddenly horizontal zoom is changed, and then quickly changed again and again, as you continue to move the locator position on the ruler. While that happens, you really need your current zoom maintained, not changed. But somehow horizontal zoom sometimes unexpectedly reacts to the mouse/locator horizontal moves on the ruler.
Please REMOVE this! Adjusting horizontal zoom by swiping mouse on the time ruler is useless and it messes up with you when you zoom in and are looking for a certain precise point in time.