Just noticed that our UI test for "Pivoted Event reports" have regressed. The feature seems to work as expected, so the issue should only be with the UI test itself.
- Expected to have this output: https://github.com/piwik/piwik/blob/2.x-dev/tests/UI/expected-screenshots/PivotByDimension_pivoted.png where the report is pivoted by the second dimension Event action.
- Instead in 3.x-dev we got this: https://github.com/piwik/piwik/blob/3.x-dev/tests/UI/expected-screenshots/PivotByDimension_pivoted.png - the Pivot is not applied.
- Note: The other UI test tests/UI/expected-screenshots/PivotByDimension_pivoted_columns_report.png is working
To ensure our UI tests will detect regressions in this feature, let's fix this one