Release note

Qt 5.15.10 release is a patch release made on the top of Qt 5.15.9. As a patch
release, Qt 5.15.10 does not add any new functionality but provides bug fixes
and other improvements.

For detailed information about Qt, see the Qt 5.15 online documentation:
https://doc.qt.io/qt-5/index.html.

Important Changes

qtbase

• 8975b7c2b0 Update bundled zlib to version 1.2.12
  zlib was updated to version 1.2.12.

• da52a120dc QBuffer: fail early in seek() beyond QByteArray's max
  capacity
  Fixed silent data corruption on 32-bit platforms when seek() fails due
  to position > INT_MAX.

• 9c60c8b122 Upgrade PCRE2 to 10.40
  PCRE2 has been updated to 10.40.

qtwebengine

• d6512f48b Enable Apple Silicon support
  Apple Silicon universal- and cross-builds on macOS are now supported.

Fixes

qtbase

• QTBUG-92445 Markdown smashes nested formatting inside lists
• QTBUG-99148 Broken html list rendering because element
• QTBUG-102066 SDK version detection does not ignore stderr
• QTBUG-53290 QWindowsPrintDevice::defaultPrintDeviceId() may crash,
  when no printers are installed
• QTBUG-95114 When accessibility is made active after the start up of an
  application then it will trigger an update of all existing controls to
  update roles and names
• QTBUG-97103 REG: 5.15.0->5.15.1: Under some circumstances the
  performance of an application on Windows when switching application
  focus
• QTBUG-98369 [macOS] Qt internal warning when FontMetrics is used
• QTBUG-99216 QMessageBox with Japanese characters gives "Missing font
  family" warning on macOS
• QTBUG-88042 tst_QTcpSocket::connectToHostError() failed on Ubuntu
  20.04 in CI
• QTBUG-102109 In Android using Qt::LocalTime with specific timezones
  does not handle daylight-saving time properly
• QTBUG-102274 QBuffer silent data corruption on seek() past INT_MAX
  (32-bit only)
• QTBUG-101460 QTimeZone::displayName ignores locale on Android
• QTBUG-100135 40000 chips example - zoom in/out buttons do not work
• QTBUG-102484 Race condition in QSemaphore
• QTBUG-101347 QMainWindow Menu / actions sometimes not displayed when
  performing long operations
• QTBUG-99810 [REG: 5.15.5->5.15.6] xcb: Dock widgets disappear if
  trying to float them from QMainWindow that contains native window
• QTBUG-69515 Linux, WindowStaysOnTopHint does not work.
• QTBUG-73485 Issue with Qt::WindowStaysOnTopHint
• QTBUG-81341 Window won't receive events above Gnome Dock despite
  X11ByPassWindowManager + WindowsStaysOnTop is set
• QTBUG-65425 FreeBSD build is broken for qmake
• QTBUG-102744 QML items with Accessible properties set does not set
  properly for Android
• QTBUG-84302 No sdkBuildToolsRevision in deployment JSON
• QTBUG-91391 androiddeployqt uses deprecated ndk.dir property
• QTBUG-102199 QLocale::toDateTime asserts
• QTBUG-101320 Apps targeting Android 12 or higher must explicitly
  declare the android:exported attribute for app components
• QTBUG-102628 Application will crash if setWindowsIcon with a big ICON
• QTBUG-102366 When filling a rect on a screen that has 150% scaling
  then it is possible that a line of pixels is not filled in
• QTBUG-41138 Error in the function errorMessageFromComError
• QTBUG-100802 [REG 6.2.2->6.2.3]Checkable QPushButton does not visually
  display checked state when toggled on macOS
• QTBUG-102782 QPushButton setEnabled(false) doesn't grey out button
• QTBUG-100997 Regression and UI Freeze (5.15 -> 6.2) in QTableView with
  Accessibility
• QTBUG-103009 QML performance regression when accessibility is active
• QTBUG-75106 Entries in the QAccessiblePluginsHash should be removed
  when a QQuickWindow is deleted
• QTBUG-102493 [REG 6.2.2 -> 6.2.3] Keyboard layout resets to English
• QTBUG-102640 [REGRESSION] Keyboard layout not respected for some key
  combinations
• QTBUG-95933 Using scanner input IRcode will result in an error when
  second character is uppercase
• QTBUG-102821 Global variable found in qeglfsx11integration.cpp
• QTBUG-86823 REG: Blinking cursor leaving an artifact in QTextEdit
• QTBUG-92468 QTextEdit cursor is drawn incorrectly
• QTBUG-20894 QCompleter unexpectedly changes QLineEdit text
• QTBUG-90442 QFileDialog::saveFileContent crashes on accept
• QTBUG-95341 QLineEdit lineRect should use boundingRect height
• QTBUG-59401 QFileDialog::setDefaultSuffix doesn't work when file path
  contains a dot
• QTBUG-95463 QListView in view mode QListView::IconMode crashes when
  the last row is moved
• QTBUG-96869 GTK file dialog is invisible if there is QTimer with 0
  interval in the main thread
• QTBUG-92096 QMenu Scrollable will reset Active Action
• QTBUG-95639 MariaDB 10.6 prepared queries metadata cache causes
  breakage in mysql driver
• QTBUG-102334 QSettings / QDateTime incompatible when switching from
  Qt6 -> Qt5
• QTBUG-86847 QXmlStreamReader.prefix() cannot return EndElement's
  prefix
• QTBUG-94448 QtWidgets: Some stylesheets explode Designer and the whole
  linux terminal (recursion crash)
• QTBUG-102952 tst_QNetworkReply::autoDeleteReplies* tests are flaky
• QTBUG-102374 [REG:5.15.7->5.15.8]: repaint() on a widget makes
  QGraphicsOpacityEffect apply multiple times
• QTBUG-101382 QtBase: Fix compiler warnings for QNX
• QTBUG-100470 Undetected test crashes on Android
• QTBUG-101888 tst_QGraphicsProxyWidget failing tests
• QTBUG-86187 Ubuntu 20.04 has InsignificantTests configurations in the
  CI
• QTBUG-95764 pure virtual call in QAccessibleQuickItem
• QTBUG-102202 [REG:6.2.3->6.2.4]: Cannot use c++latest with qmake and
  MSVC
• QTBUG-102129 LTS 5.15 fails to build with GCC 11 (C++17)
• QTBUG-102447 tst_drawingmodes failed
• QTBUG-102443 tst_QSocks5SocketEngine::passwordAuth fails with Ubuntu
  20.04 in lts-5.15
• QTBUG-51327 [Windows 8.1]: After maximizing a window and toggling the
  frameless window hint and moving to another monitor then the window can
  be too big
• QTBUG-93360 Compile Qt with gcc 11
• QTBUG-102034 Merely subclassing QHeaderView causes it to lose built-in
  functionality
• QTBUG-99545 App crashes in function QQmlPropertyCache::property(int)
  const on ARM 64bit
• QTBUG-102594 [REG 5.15.6 -> 5.15.9] Many ANR issues by QtAccessibility