Example: ``` data = { 'val': [1, 2, 3], 'min': [-2, -1, -2], 'max': [1, 2, 0], } ggplot(data) + geom_ribbon(aes(y='val', xmin='min', xmax='max')) ``` The tooltip appears in wrong place on y-oriented ribbon in this example.  This problem appeared in LP v4.4.0, previously the tooltips for `geom_ribbon()` looked another way: 