See discussion in: https://github.com/piwik/piwik/pull/10842
The UI test Overlay_page_new_links /
page_new_links does not work about since this PR was merged #10580
Seems this one is already fixed somehow... latest process screenshot looks correct http://builds-artifacts.piwik.org/piwik/piwik/3.x-dev/21730/processed/Overlay_page_new_links.png
But the expected one doesn't: https://github.com/piwik/piwik/blob/3.x-dev/tests/UI/expected-screenshots/Overlay_page_new_links.png
do you know why tests are passing anyway?
Test was changed to check for "similar" image. I'll remove that...