Since I upgraded to Fusion 13 I have noticed an issue with mouse scrolling.
I have a mouse that has a free-spinning wheel. If I scroll at a normal speed everything is fine.
However, if I scroll at a very high rate of speed, the scrolling reverses direction during the high speed and then returns to the intended direction when the wheel slows down.
This did not occur while using Fusion 11, and it does not occur in macOS 13.
I am using Fusion 13 pro and the guest VM is the same Windows 10 OS I was using on Fusion Pro 11.
Since Fusion 11 wasn't supported on Ventura, I presume you upgraded the host OS as well between the two? If so, there's two thoughts - one is that Apple rebuilt the USB subsystem in Monterey and broke a lot of things, so if it's a USB mouse that could be it.
The other thing is that Ventura and Monterey put much heavier loads on the host than Big Sur and earlier. It's possible that your host/guest stack is causing resource contention. What's the host and guest config?
As an extra data point, I see this same problem with Fusion Pro 13.0.1.
However in my case I previously had Fusion Pro 12.2.5 running on a mac 13.2 host without the issue. Simply upgrading to 13 introduced the issue. It occurs on both mac and Windows preexisting VMs. Another odd aspect is that the problem does not occur is I switch to the Unity view.
The mouse in question is USB. I will try to dig out a wireless mouse to see if that changes anything. EDIT: I see the same issue with a bluetooth mouse, unfortunately.
You are correct, I did upgrade macOS and then Fusion.
My mouse is Bluetooth.
Host: Mac Book Pro 2019, 2.4 GHz 8-Core Intel Core i9, 64GB Ram
Guest: Windows 10 Ent, 4 CPU, 16GB Ram
Has this problem been fixed in any of the newer versions of Fusion 13? I finally dropped back to Fusion 12.2.5 and that stopped the problem.
I should note that I worked with support for a while. They eventually gave up.