Both Unity8 and QtMir are excused. On the day of the regression, unity8 was unchanged and qtmir changed but not in logic.
This leaves only Mir. On the day of the regression Mir was upgraded from 0.19.3 to 0.20.0. And looking at the source code, a large amount of code changed in Mir's buffering/GL logic between those releases. ** Changed in: qtmir Status: Confirmed => Invalid ** Changed in: qtmir (Ubuntu) Status: Confirmed => Invalid ** Changed in: mir Milestone: None => 0.22.0 ** Also affects: mir/0.21 Importance: Undecided Status: New ** Also affects: mir/0.20 Importance: Undecided Status: New ** Changed in: mir/0.21 Importance: Undecided => High ** Changed in: mir/0.21 Status: New => Confirmed ** Changed in: mir/0.20 Status: New => Won't Fix ** Changed in: mir/0.20 Status: Won't Fix => Confirmed ** Changed in: mir/0.20 Importance: Undecided => High -- 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 Mir 0.20 series: Confirmed Status in Mir 0.21 series: Confirmed Status in QtMir: Invalid Status in qtmir package in Ubuntu: Invalid 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