Keyboard stays open on lock screen / Unity8 doesn't unfocus app when switching to lock screen first time

[danjjl]

If the screen is locked after an application has been first opened unity doesn't remove focus from the app. It does remove focus on subsequent screen locks. This results in the keyboard not being dismissed if it was displayed prior to the screen being locked.

Steps to reproduce:

- Open the messaging app
- Start composing a message
- Lock the screen using the power button (or waiting for your automatic screen lock timeout)
- Wake the phone by briefly pressing the power button

Result: the keyboard is still overlayed on top of the lock screen. (see attachment)

Expected result: the keyboard is not shown on the lock screen.

This can also be seen in the application log (e.g. ~/.cache/upstart/application-legacy-messaging-app-.log), where you would expect to see the message:

UbuntuWindow::handleSurfaceFocusChange(focused=false)

Indicating that focus has been removed from the app, however this doesn't happen the first time you lock the screen after starting the app, only on subsequent locks.

---

OS build number: 234
Ubuntu Image part: 20150908
Ubuntu build description: Ubuntu 15.04 - armhf (20150908-020305)
Device Image part: 20150819
Device build description: aosp_mako-userdebug 4.4.2 KOT49H 20150818-1500-0ubuntu1 test-keys
Customisation Image part: 20150908

[Bill Filler (bfiller)]

I have been seeing this a fair amount as well on rc-proposed on arale, but it's not reproducible all the time.