I am able to reproduce this issue even with a mouse attached, so it’s nothing specific to the trackpad. Unfortunately, I am also able to reproduce this issue with KNIME AP 3.7.2, which means that it is rather related to macOS than AP. I am on macOS 10.15.x as well.
I’ll pass this on to our developers for some debugging.
we could not reproduce that bug with MacOs BigSur, so it might be related to the older MacOS version.
However, a possible workaround could be that whenever you drag the workflow to the top, you just hold it and wait a second and then the Explorer scrolls automatically up. Then you don’t need to scroll with your fingers and it doesn’t freeze. I hope that helps.