StaleElementReference error in vertical bar chart test

[LeeDr]

I've seen this a few times so creating an issue to track getting it resolved.

http://build-eu-00.elastic.co/job/kibana_core_pr/3763/console

19:23:41.135: Set absolute time range from "2015-09-19 06:31:44.000" to "2015-09-23 18:31:44.000"
19:23:41.135: clickTimepicker
19:23:42.269: --Clicking Absolute button
19:23:42.692: --Setting From Time : 2015-09-19 06:31:44.000
19:23:43.333: --Setting To Time : 2015-09-23 18:31:44.000
19:23:44.180: Bucket = X-Axis
19:23:44.197: found bucket types 4
19:23:44.238: Aggregation = Date Histogram
19:23:45.087: Field = @timestamp
19:23:45.958: ... sleep(1000) start
19:23:46.959: ... sleep(1000) end
19:23:46.959: saveButton button clicked
19:23:54.029: click submit button
19:24:31.538: Taking screenshot "/home/jenkins/workspace/kibana_core_pr/test/output/failure_1463765069042_vertical bar chart_should save and load.png"
>> FAIL: firefox on any platform - kibana - visualize app - visualize app - vertical bar chart - should save and load (45668ms)
StaleElementReference: [GET http://localhost:4444/wd/hub/session/7ca894ff-9e8c-4bbf-a7b1-0305fa77b858/element/768/text] Element not found in the cache - perhaps the page has changed since it was looked up

[LeeDr]

I'm pretty sure the problem is happening at the very start of this test when it tries to save the visualization. The screenshot captured on the failure DOES show the title "Visualization VerticalBarChart"

        bdd.it('should save and load', function pageHeader() {
          return visualizePage.saveVisualization(vizName1)

In visualizePage.saveVisualization(vizName1) the last thing it does is try to get the toast message from saving the visualization and returns the visible text. It would seem it's this step that is failing because there's a debug log message immediately after the toast message text would be returned and we don't get that in the log.

      // verify that green message at the top of the page.
      // it's only there for about 5 seconds
      .then(function () {
        return self.remote
        .setFindTimeout(defaultFindTimeout)
        .findByCssSelector('kbn-truncated.toast-message.ng-isolate-scope')
        .getVisibleText();
      });