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[Bug 1475205] Re: Random Chinese character missing with Ubuntu font


qtbase-opensource-src (5.5.1+dfsg-6ubuntu3) xenial; urgency=medium

  * debian/patches/enable-tests.patch:
    - Replace the non-DFSG-free RFC files with public domain content.
    - Adjust tests to the new files.
    (LP: #1522442)
  * debian/copyright: mention the replacement.
  * Switch to opt-in for architectures to run tests on.

 -- Timo Jyrinki <timo-jyrinki@xxxxxxxxxx>  Mon, 07 Dec 2015 14:02:11

qtbase-opensource-src (5.5.1+dfsg-6ubuntu2) xenial; urgency=high

  * Skip largefile test on s390x too, in addition to amd64.
  * Make tests to keep going till the end with -k.

 -- Dimitri John Ledkov <xnox@xxxxxxxxxx>  Fri, 04 Dec 2015 16:54:28

qtbase-opensource-src (5.5.1+dfsg-6ubuntu1) xenial; urgency=medium

  * New upstream release. (LP: #1437206) (LP: #1450137) (LP: #1474313)
    (LP: #1470700) (LP: #1504631) (LP: #1423659) (LP: #1474775) (LP: #1508945)
  * Replace load_testability_from_env_var.patch with upstreamed
  * Drop patches in upstream:
    - Correct-typo-in-the-Gujarati-openType-identififer.patch
  * Rebase enable-tests.patch. Disable one failing QtWidgets test.
  * Build depend on GStreamer 1.0 and add a configure option for it.
  * Update symbols.
  * Mark/unmark private symbols.
  * Replace two Ubuntu patches with upstreamed patches:
    - Drop disable-generic-plugin-when-others-available.patch, replace with
    - Drop qopenglframebufferobject_powervrworkaround.patch, replace with
  * debian/patches/Make-sure-networkAccessibilityChanged-is-emitted.patch:
    - Include a network fix from Qt 5.5 branch (merged after 5.5.1)
      (LP: #1470700)
  * debian/patches/Use-Node-name-if-Node-logicalModuleName-is-empty-for.patch:
    - Fix a qdoc issue (LP: #1447182)
  * Remove disable_overlay_scrollbars.diff as overlay scrollbars were dropped.
  * debian/patches/Prefer-QT_PLUGIN_PATH-over-compiled-in-paths.patch:
    - Backport. Prefer QT_PLUGIN_PATH over compiled-in paths (LP: #1519927)
  * debian/patches/Fix-crash-on-exit-caused-by-QStringLiterals.patch
    - Backport. Fix a crasher on exit (LP: #1436973)
  * Replace our workaround for font rendering with new backported upstream
    - Add debian/patches/Fix-falsely-reported-style-for-fallback-font.patch
    - Add debian/patches/Remove-historical-4-padding-in-QFontEngine-alphaMapF.patch
    - Remove debian/patches/enable_fonts_always_smoothly.patch
      (LP: #1475205)

 -- Timo Jyrinki <timo-jyrinki@xxxxxxxxxx>  Tue, 01 Dec 2015 06:16:35

You received this bug notification because you are a member of
Documentation Packages, which is subscribed to ubuntu-font-family-
sources in Ubuntu.

  Random Chinese character missing with Ubuntu font

Status in Canonical System Image:
  Fix Released
Status in qtbase-opensource-src package in Ubuntu:
  Fix Released
Status in qtdeclarative-opensource-src package in Ubuntu:
Status in ubuntu-font-family-sources package in Ubuntu:
Status in ubuntu-ui-toolkit package in Ubuntu:

Bug description:
  After applied 50 GU setting in image, we started seeing randomly
  missing Chinese characters across scopes and apps header, not clipped
  at the begin or end of string, sometimes in the middle.


  1. Switch display language to zh_CN in system settings
  2. Reboot the phone


  I should see all header strings displayed properly.


  Randomly missing character.


  current build number: 51
  device name: arale
  channel: ubuntu-touch/rc-proposed/meizu.zh-proposed
  last update: 2015-07-16 04:59:10
  version version: 51
  version ubuntu: 20150716
  version device: 20150709-8965e37
  version custom: 20150716-819-9-6

  ---------- update ----------
  The problem of missing characters can be reproduced even on a desktop, outside of the header, without importing Ubuntu.Components:

  import QtQuick 2.0
  Item {
      width: 800
      height: 600

      Text {
          anchors.centerIn: parent
          text: "系统设置 one two"
          font.family: "Ubuntu"
          font.pixelSize: 69
          font.weight: Font.Light

  The problem only appears to occur with this specific combination of
  font family, pixelSize and weight. Tim Peeters reproduced the problem
  on vivid on a laptop without changing the default settings for the
  language (LANGUAGE="en_US").

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