Bisected the regression and found it happened in rc-proposed krillin image 266 on 24 Feb 2016.
See the small diff attached for what changed. ** Changed in: mir Status: New => Confirmed ** Changed in: mir Importance: Undecided => High ** Patch added: "diff-krillin-rc-proposed-265-266.diff" https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1563287/+attachment/4637327/+files/diff-krillin-rc-proposed-265-266.diff ** Changed in: unity8 (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1563287 Title: [regression] [OTA-10] Spread animation stutters badly with only a few apps opened Status in Canonical System Image: Confirmed Status in Mir: Confirmed Status in QtMir: Confirmed Status in qtmir package in Ubuntu: Confirmed Status in unity8 package in Ubuntu: Invalid Bug description: Regression in OTA-10: tested on krillin and arale on rc-proposed. also I tried the fix for bug 1556763 but that's not related to this as well. The right edge switcher on both krillin and arale stutter when I drag it from the right edge and then swipe through the list of opened windows. This was not the case a few months ago, so we clearly regressed here. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1563287/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp