header navigation broken on flo

[Ken VanDine]

There's a regression on flo in header navigation. In ubuntu-system-settings, none of the pages have a back button in the header which breaks navigation. There seems to be other header issues, like some of the panels have text that scrolls over top of the header.

I can't reproduce this behavior on arale, with the same versions.

qtdeclarative5-ubuntu-ui-toolkit-plugin:
  Installed: 1.3.1778+15.04.20151221-0ubuntu1

Here's a log, note the multiple version import warning, I do not see the same warning on arale, which is extremely odd.

2016-01-04 12:17:49,044 - WARNING - Got invalid serialized mime data. Ignoring it.
2016-01-04 12:17:55,481 - WARNING - Attempted to deliver an event to a non-existent window, ignoring.
2016-01-04 12:17:55,588 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/ListItems/1.2/Standard.qml:171: TypeError: Cannot read property of null
2016-01-04 12:17:55,591 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/1.2/PageTreeNode.qml:40: TypeError: Cannot call method 'updatePageTree' of null
2016-01-04 12:17:55,591 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/1.2/Page10.qml:27: TypeError: Cannot read property of null
2016-01-04 12:17:55,592 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/1.2/Page10.qml:28: TypeError: Cannot read property of null
2016-01-04 12:17:55,611 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/1.2/PageTreeNode.qml:40: TypeError: Cannot call method 'updatePageTree' of null
2016-01-04 12:17:55,611 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/1.2/Page10.qml:27: TypeError: Cannot read property of null
2016-01-04 12:17:55,612 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/1.2/Page10.qml:28: TypeError: Cannot read property of null
Attempted to unregister path (path[0] = com path[1] = canonical) which isn't registered
Loading module: 'libubuntu_application_api_touch_mirclient.so.3.0.0'
qrc:/qml/EntryComponent.qml:34:5: QML AbstractButton: Mixing of Ubuntu.Components module versions 1.3 and 1.2 detected!
2016-01-04 12:18:05,143 - WARNING - file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/1.0/Icon.qml:37:5: QML QQuickImage: Failed to get image from provider: image://theme/clear-search
2016-01-04 12:18:05,755 - WARNING - Got invalid serialized mime data. Ignoring it.

[Ken VanDine (ken-vandine)]

Some device info:

current build number: 89
device name: flo
channel: ubuntu-touch/rc-proposed/ubuntu-pd

[Ken VanDine (ken-vandine)]

I downgraded to image 88 from the same channel and confirmed the header navigation is fine. So this is definitely a regression between image 88 and image 89

[Tim Peeters (tpeeters)]

I don't see an obvious commit that would have broken this.
Unfortunately I don't have a flo device to see where it broke. Zsombi can you test?

[Zoltan Balogh (bzoltan)]

Strange. There is no diff between flo image 88 and 89

manifests 88 -> https://launchpadlibrarian.net/232434413/livecd.ubuntu-pd.manifest
manifest 89 -> https://launchpadlibrarian.net/232821809/livecd.ubuntu-pd.manifest

[Ken VanDine (ken-vandine)]

After today's update to image 90 I can't reproduce the bug. Also no change to uitk, this makes me think perhaps it was related to the QML cache.