Impact
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Without 'caribou' installed, the Screen Keyboard setting, if Enabled, only works for for the login screen, password prompts and the Activities Overview search.
It looks the caribou gir and library are enough for those places, but the 'caribou' binary is needed for the Screen Keyboard to work in screen input in apps.
Test Case
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From Ubuntu GNOME, install the update.
caribou should be installed now.
Open the Settings app (gnome-control-center).
Click Universal Access then turn on Screen Keyboard.
Open Text Editor (gedit)
Click (or tap) in the window to start typing.
The onscreen keyboard should be
Regression Potential
--------------------
I also tested with gnome-shell-extension-onboard installed. Onboard appears to completely ignore the Screen Keyboard setting (LP: #1690582). Also when Onboard is enabled, caribou is not shown at all except in the password prompts and Activities Overview search where onboard is currently not working. In other words, I tested whether having caribou installed would interfere with Onboard and I can see that Caribou provides no problem.
Original Bug Report
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The gnome on-screen keyboard is hidden by default and should appear when a text field is focused.
This behavior is working as expected clicking on one of the text field of the shell such as the search field in the gnome overview. Clicking on text fields not owned by the gnome-shell such as in gedit or in a terminal emulator doesn't un-hide the keyboard.
Steps to reproduce the issue:
* Enable the keyboard in accessibility.
* Open a text editor. (I've tested with gedit)
* Click on the text field/area.
Expected behavior:
* The keyboard should appear.
Actual behavior:
* The keyboard doesn't appear.
Also, I think it would be useful to be able to choose:
* Between the "fullscreen" mode (the default one) and a windowed mode.
* Between the "show on focus" behavior and a "always shown" behavior.
The "fullscreen" mode should be incompatibile with the "always shown" behavior unless there is a way to close it manually (a button on the on-screen keyboard) in order to prevent a deadlock-like situation where the keyboard is preventing us from closing itself because we can't click in a window behind it. That button already exists and has a similar behavior.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-shell 3.18.4-0ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Sun Jun 5 13:49:03 2016
DisplayManager: gdm3
InstallationDate: Installed on 2016-04-22 (43 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=it_IT.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.