Odd behavior when downloading.
When I download something the Vivaldi GUI makes a noticeable shake, but it does not open the bar like it used to. As soon as the download is finished the bar opens. It isn't a problem, but I thought that the developers would want to know that Vivaldi is acting in a different way than it has in the past. I love Vivaldi and this is in no way a complaint.
settings>downloads>open download panel automatically.
shaking: i disable animations on cinnamon and gnome. have you played with these settings?