Description: While in the Calendar apps day view tab, scrolling vertically appears to be significantly choppy and less smooth than scrolling in week view tab and compared with other apps. Repro Steps: 1) Updated Buri to BuildID: 20140123004001 2) Open Calendar app 3) Tap day tab at bottom of screen 4) Drag finger up and down to scroll Actual: Scrolling appears choppy and not smooth in Calendar's day view tab. Expected: Scrolling is smooth across Calendar app. Environmental Variables: Device: Buri v1.3 Mozilla RIL BuildID: 20140123004001 Gaia: 6fbeac2415f07f10de181f0877ddf67ee299b885 Gecko: e8f6bdf8db3d Version: 28.0a2 Firmware Version: V1.2-device.cfg Notes: Repro frequency: 3/3, 100% See linked: video clip - http://youtu.be/OWr3O2EGTkA

Issue occurs on 1.4 Result: Scrolling appears choppy and not smooth in Calendar's day view tab. Environmental Variables: Device: Buri v1.3 Mozilla RIL BuildID: 20140123040608 Gaia: 00d8d05f0d0730a3cbf17635ad6a6b197a2ce7c9 Gecko: 1a75d37e1e39 Version: 29.0a1 Firmware Version: V1.2-device.cfg

Does this reproduce on 1.1?

This issue also occurs in Gallery app as well as all tabs of Music app. This issue does not occur when scrolling in Settings, Browser, or Contacts apps. This issue stops occurring with APZ turned off.

kats - is this a dupe of bug 942750?

This looks like a dupe of bug 962881 which is a recent regression; the fix is on b2g-inbound now.