title: Chart tooltip autohide
body: <p>Currently I have a bubble chart that I am using tooltips to display some more information about the bubble.  I need the tool tip to stay visible while a user clicks a button to export the chart as an image.  I have set the autoHide attribute to false, but it does not seem to have any effect. My tooltip does not get a close button</p>
  
  <p>I have tried adding an autoHide: false to the chart's tooltip configuration, this did not produce any effect.</p>
  
  <pre><code>series: [{
                      type: "bubble",
                      xField: "CurrentLossEstUSD",
                      yField: "CurrentScore",
                      sizeField: "MFL_TOTAL",
                      color: "#dadfe1",
                      tooltip: {
                          visible: true,
                          format: "{3}: MFL - {2:N0}",
                          autoHide: false
                      },
  
  }]
  </code></pre>
  
  <p>Basically I need the tooltip to stay open while a user clicks a button that converts the chart to an image, without the autoHide feature turned off the tooltip disappears on mouse out of the chart container</p>