Bug#853831: libqt5gui5: font rendering broken

[M G Berberich <debian@oss.m-berberich.de>]

Package: libqt5gui5
Version: 5.7.1+dfsg-3
Severity: important

Dear Maintainer,

after update font-rendering in QT5-applications is ugly. Neither the
hinting settings from KDE nor system-wide settings have any
effect. Fonts are always rendert unhinted und look blurry.
QT4-applications look fine, so the problem probably is in Qt5 and not
in freetype or fontconfig.

-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.6 (SMP w/8 CPU cores; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libqt5gui5 depends on:
ii  fontconfig                       2.11.0-6.7
ii  libc6                            2.24-8
ii  libdrm2                          2.4.74-1
ii  libegl1-mesa [libegl1-x11]       13.0.3-1
ii  libfontconfig1                   2.11.0-6.7
ii  libfreetype6                     2.6.3-3+b1
ii  libgbm1                          13.0.3-1
ii  libgcc1                          1:6.3.0-5
ii  libgl1-mesa-glx [libgl1]         13.0.3-1
ii  libglib2.0-0                     2.50.2-2
ii  libharfbuzz0b                    1.2.7-1+b1
ii  libice6                          2:1.0.9-1+b1
ii  libinput10                       1.5.4-1
ii  libjpeg62-turbo                  1:1.5.1-2
ii  libmtdev1                        1.1.5-1
ii  libpng16-16                      1.6.28-1
ii  libqt5core5a [qtbase-abi-5-7-1]  5.7.1+dfsg-3
ii  libqt5dbus5                      5.7.1+dfsg-3
ii  libqt5network5                   5.7.1+dfsg-3
ii  libsm6                           2:1.2.2-1+b1
ii  libstdc++6                       6.3.0-5
ii  libudev1                         232-14
ii  libx11-6                         2:1.6.4-2
ii  libx11-xcb1                      2:1.6.4-2
ii  libxcb-glx0                      1.12-1
ii  libxcb-icccm4                    0.4.1-1
ii  libxcb-image0                    0.4.0-1
ii  libxcb-keysyms1                  0.4.0-1
ii  libxcb-randr0                    1.12-1
ii  libxcb-render-util0              0.3.9-1
ii  libxcb-render0                   1.12-1
ii  libxcb-shape0                    1.12-1
ii  libxcb-shm0                      1.12-1
ii  libxcb-sync1                     1.12-1
ii  libxcb-xfixes0                   1.12-1
ii  libxcb-xinerama0                 1.12-1
ii  libxcb-xkb1                      1.12-1
ii  libxcb1                          1.12-1
ii  libxi6                           2:1.7.8-2
ii  libxkbcommon-x11-0               0.7.1-1
ii  libxkbcommon0                    0.7.1-1
ii  zlib1g                           1:1.2.8.dfsg-4

Versions of packages libqt5gui5 recommends:
ii  libqt5svg5             5.7.1~20161021-2
ii  mesa-utils             8.3.0-3
pn  qt5-gtk-platformtheme  <none>

Versions of packages libqt5gui5 suggests:
ii  qt5-image-formats-plugins  5.7.1~20161021-2
pn  qtwayland5                 <none>

-- no debconf information