Comment 4 for bug 1549072

Flickering shouldn't happen, it even happens when scroll bars are supposed to be hidden, indicating a possible bug with WebKit. This didn't happen in a normal web browser though.

For now, the vertical scroll bar will always stay on screen. :(
https://bitbucket.org/lah7/ubuntu-mate-welcome/commits/b1178293bcfa599737606b5a6afbee2eee6d6032?at=master