This is particularly relevant to using an Apple Magic Mouse.
Before PL4.1, the main editing window would only scroll if the zoom level was greater than “to fit”. If you wanted to zoom, you could press either the Cmd or the Option key and scroll the mouse with either one finger or two.
Once the zoom level was greater than “to fit”, scrolling the mouse without a modifier key would move the image in the desired direction.
PL4.1 changes that
Now, zooming doesn’t require the Cmd or Option key and is a real nuisance when the zoom level changes when you thought you were going to move around in the image. Also, it doesn’t take but the slightest of touches on the mouse to provoke a zoom.
The new behaviour also requires that you press on the mouse to move the image around.
But hovering your finger above the mouse can provoke the lightest of accidental touches which then changes the zoom level
@StevenL After years of working without problems in one way, why has this been changed?