Bug#990129: libqt5core5a: breaks work of some QtWebEngine based programs

[Boris Pek <tehnick-8@yandex.ru>]

Package: libqt5core5a
Version: 5.15.2+dfsg-6
Severity: important
X-Debbugs-Cc: tehnick-8@yandex.ru


Hi,

I use Debian 11 (Bullseye) on work PC to develop Qt based projects. All worked
fine until update of Qt packages last week: one of our QML based application
stopped showing maps without any errors in stdin/stdout.

Today I spent few hours to find the root of problem. QtWebEngine is used for
displaying maps and it is quite problematic itself, but I was surprised to find
what problem was caused by update in QtCore library:
libqt5core5a:amd64 (5.15.2+dfsg-5, 5.15.2+dfsg-6)

And if I understand correctly here is the problematic patch:
https://salsa.debian.org/qt-kde-team/qt/qtbase/-/commit/5eaeb73

Could you revert it please?

Best regards,
Boris


-- System Information:
Debian Release: 11.0
  APT prefers testing
  APT policy: (700, 'testing'), (500, 'testing-security')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-7-amd64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8),
LANGUAGE=ru:en_US
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libqt5core5a depends on:
ii  libc6                  2.31-12
ii  libdouble-conversion3  3.1.5-6.1
ii  libgcc-s1              10.2.1-6
ii  libglib2.0-0           2.66.8-1
ii  libicu67               67.1-6
ii  libpcre2-16-0          10.36-2
ii  libstdc++6             10.2.1-6
ii  libzstd1               1.4.8+dfsg-2.1
ii  shared-mime-info       2.0-1
ii  zlib1g                 1:1.2.11.dfsg-2

Versions of packages libqt5core5a recommends:
ii  qttranslations5-l10n  5.15.2-2

Versions of packages libqt5core5a suggests:
ii  libthai0  0.1.28-3