Issues with Ubuntu 14.04
Based on this build I am running 126.96.36.199 (Developer Build) dev (64-bit) - speed dial site previews all blank even after reload, used to work on previous versions though - clicking site preview in speed dial goes to new tab in foreground instead of background as it was in prior versions, this is inconvenient when having to click multiple ones - vivaldi always opens in same spot on desktop in smaller window regardless if I close it before from fuller window mode, it is an improvement from prior versions that always opened vivaldi on my 2nd monitor, now its on 1st but smaller than I like.
1 and 2 are both known bugs. A workaround for speed dial thumbnails not loading was posted over here by The_Solutor.
And I can't reproduce 3. Distro is Linux Mint 17.2