Tooltip gets stuck after refresh data

[jenicar]

I'm having the same issue as this one from angular-nvd3:
krispo/angular-nvd3#172

If I happen to to hover the chart so a tooltip is shown WHILE the refresh happens on the line chart, the tooltip stays stuck in the same position and is never removed from the DOM.

This workaround works for me but would be great if it wasn't needed
d3.select("#chartid .nvtooltip').remove();

Using nvd3 version 1.8.1

[liquidpele]

Please open issues under novus/nvd3, thanks!