[1.Description]: [Flame v2.2][Homescreen]When tapping "X" icon on a smart collection in homescreen edit mode, the delete view will flash, and choose Cancel button, it will also flash for about 1~2 seconds. Found Time:21:00 Attachment:logcat2100.txt &VIDEO.MP4 [2.Testing Steps]: 1.Long tap an app on home screen. 2.Tap "X" icon on a smart collection **it will go to the delete view. 3. Tap Cancel button. [3.Expected Result]: 2&3.The view should not flash. [4.Actual Result]: 2&3.The view will flash for about 1~2 seconds. [5.Reproduction build]: Device:Flame 2.2[Affected] Build ID 20150327162502 Gaia Revision 473cd63f53c855299b719285d9b95e3f2910782f Gaia Date 2015-03-27 20:14:43 Gecko Revision https://hg.mozilla.org/releases/mozilla-b2g37_v2_2/rev/b358619def45 Gecko Version 37.0 Device Name flame Firmware(Release) 4.4.2 Firmware(Incremental) eng.cltbld.20150327.194944 Firmware Date Fri Mar 27 19:49:53 EDT 2015 Bootloader L1TC000118D0 Device:Flame 3.0[Unaffected] Build ID 20150327160203 Gaia Revision 9cc496cecc37d7a29f9279827cdf6e4891211f67 Gaia Date 2015-03-27 13:55:18 Gecko Revision https://hg.mozilla.org/mozilla-central/rev/44e454b5e93b Gecko Version 39.0a1 Device Name flame Firmware(Release) 4.4.2 Firmware(Incremental) eng.cltbld.20150327.192632 Firmware Date Fri Mar 27 19:26:42 EDT 2015 Bootloader L1TC000118D0 [6.Reproduction Frequency]: occasionally Recurrence,3/5 [7.TCID]: Free Test

a regression, nominate a 2.2 blocker

This is a dupe of bug 1146137.