Xbuntu / AMD
Short description of error
In the VSE if you have it set to Image Preview and hit the "N" button you get the panel on the right but the entire image disappears... also if you try to hit "N" again it will only work if you're hovering over the panel itself.
Exact steps for others to reproduce the error
go to VSE
add a random video file
go to Image Preview
...witness the weirdness...
PS. If you have it set to Sequencer/Preview and hit "N" you'll see a skewed version of the image for a split second before it returns to normal. This might be a related bug.