Disable window snapping to top on move to second monitor/display
Very annoying indeed and it's getting worse. The situation I am in is trying to view webpages in different screen widths. As the browser edge gets closer to other windows, Mac now thinks it must "jump to and hold it there" interrupting my process of expanding the page through every pixel width.

There is no setting to manage this yet, however, holding +alt while you scale or move windows dismisses the feature. The very nice bonus of dismissing the 'feature' with alt is how much video/CPU time it took to implement this nuisance is released back to your use. The dragging and re-positioning now becomes much more responsive and smooth rather than just jumping around the screen. It's now a habit to just hold alt as I resize any window on the screen.