Starting apps from the Activities overview on Stretch test suite is fragile
See at the end of the attached video. This can break lots of tests, hence >normal priority.
FindFailed: can not find GnomeActivitiesOverview.png on the screen. Line ?, in File ? (RuntimeError) ./features/step_definitions/common_steps.rb:640:in `/^I start and focus GNOME Terminal$/' ./features/step_definitions/common_steps.rb:646:in `/^I run "([^"]+)" in GNOME Terminal$/' ./features/step_definitions/usb.rb:110:in `/^I start Tails Installer in "([^"]+)" mode$/' ./features/step_definitions/usb.rb:154:in `/^I "([^"]*)" Tails to USB drive "([^"]+)"$/' ./features/step_definitions/usb.rb:160:in `/^I fail to "([^"]*)" Tails to USB drive "([^"]+)"$/'
Test suite: use better image for the GNOME Activities Overview.
The old image was of a part of the overview that will change if any
other window is open, so it would only work if no other window is
Test suite: always wait for the 'Tor is ready' notification.
Normally we run these steps in this order:
When Tor is ready
And all notifications have disappeared
but the second step may run before the 'Tor is ready' notification
is shown, so it's not closed. It has been observed to block important
parts of the GNOME Activities Overview, leading to failure when trying
to start applications.