Release note

Qt 5.15.5 release is a patch release made on the top of Qt 5.15.4. As a patch
release, Qt 5.15.5 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

d2068a8108 Read DPI from X Settings initially as well
Qt now reads Xft/DPI from X settings at startup, and will prefer this
value over Xft.dpi from X resources.
4ec4a46d79 Update bundled libjpeg-turbo to version 2.1.0
libjpeg-turbo was updated to version 2.1.0
9e8f580d76 Windows: Work-around misreporting of Script and Roman
Fixed text in "Roman" and "Script" bitmap fonts not showing in Qt Quick
applications.
4dccd73b40 Windows: Add synthesized fonts also when there is a style
name
Fixed an issue where bold/italic would not be synthesized for fonts if
QFont::NoFontMerging was set.
a15c16f5c8 Fix memory leak when using small caps font
Fixed a memory leak when initializing a small caps font.
54eac7e5ac SQLite: Update SQLite to v3.35.5
Updated SQLite to v3.35.5
096c622368 macOS: Fix synthesized bold
Fixed an issue where boldness would not be correctly synthesized for
families with no bold variant.
716303c35a Write out the HTML correctly for nested lists
The output of toHtml() now handles nested lists correctly.
dc9c43b115 QVector: fix compilation failure in C++20 mode w/strict
iterators
Fixed a compile error in QVector(int, T) that occurred in C++20 mode
with QT_STRICT_ITERATORS.

qtconnectivity

bc3352eb CoreBluetooth: add a workaround to enable using scan options
Enable setting a scan option (that allows duplicates)

Fixes

qtbase

QTBUG-91892 [Reg : 5.15.2 -> 5.15.3] Clipped layout margins
QTBUG-86806 QFile::copy() calls syncToDisk() on the wrong object
QTBUG-92838 Redownloading same file in parallel produces a warning
about removal of cache file
QTBUG-92051 The keyboard does not appear after changing the focus
QTBUG-91885 QSqlTableModel support column names with dots
QTBUG-91720 Webassembly: TapHandler onSingleTap stopped working
QTBUG-77427 setDropAction() is not respected in ItemViews during move
operation on MAC
QTBUG-65927 Shift the coordinates under Android when I use QML + c++.
QTBUG-84029 Reg:Frameless Window when moved 0 0 shifts few pixel to
left
QTBUG-91284 Http2: authenticationRequired is not emitted
PYSIDE-1404 Incompatible import of "Object" in compiled UI
QTBUG-91194 Android Service - Exception on startup
QTBUG-66727 [Android]: When changing focus between TextInput fields
there is a flicker of the QQuickWidget
QTBUG-91758 [REG 5.13.2->5.14.0]: QPainter renders in Text
wrong when units set to micrometers
QTBUG-93032 Reg:5.15.2->5.15.3 QPushButton Focus rect is change of
behavior
QTBUG-92240 MDI Sub window title remains in main window title when
DontMaximizeSubWindowOnActivation option used
QTBUG-93475 QPainter rotate causes pixmap rendering issues
QTBUG-90840 QSyntaxHighlighter does not apply capitalization with
QTextCharFormat::setFontCapitalization
QTBUG-91770 qvnc: Arbitrary memory read vulnerability
QTBUG-85702 qt5_add_big_resources does not work with QT_NAMESPACE
QTBUG-61652 Android's virtual keyboard "OK" button must not accept the
QDialog
QTBUG-91362 Cursor handle in wrong place when app is launched i split
screen
QTBUG-85826 Some Windows fonts don't work in Text
QTBUG-91398 When QFont::NoFontMerging is set then if bold or italics
is requested that is not provided by the font then it will end up not
synthesizing this
QTBUG-93779 [elxr] (error #412) unresolved symbols: 1
QTBUG-63393 [iOS]: When typing in a TextEdit and then using Undo, it
is only possible to undo the very last change
QTBUG-70137 Dockwidgets - Placing QDockWidget is almost impossible
QTBUG-93677 QStringView::mid() does not work for length < 0
QTBUG-71123 "moc" failed to parse auto in trailing-return-type signals
and slots
QTBUG-82037 When an application built with CMake is using a statically
linked version of Qt then it will not include the SVG based image format
QTBUG-93501 Missing support for PLUGIN_EXTENDS (qmake) and
QT_PLUGIN_EXTENDS (CMake) with Qt static builds
QTBUG-71701 QFileSystemModel fails to locate a host from the root
node's visible children
QTBUG-49771 Backspace key is not working when CapsLock is on
QTBUG-85634 Japanese and Chinese characters have no effect by bold
enabled
QTBUG-92584 QSqlTableModel ORDER BY doesn't quote table name [with
spaces]
QTBUG-88374 QTextDocument::toHtml: nested lists (ul, ol) not nested in
output
QTBUG-93494 iOS A11Y VoiceOver: QAccessible::EditableText not
implemented as "TextField" and value is missing last character
QTBUG-88651 Can't Hide Menu Separator
QTBUG-93620 W System.err: java.lang.NoSuchMethodException:
notifyQtAndroidPluginRunning
QTBUG-93831 [REG 5.15.2->5.15.4]: Android: Copy-pasting text is not
possible after pasting
QTBUG-92188 Stack smashing detected using QImage::scaled
QTBUG-84494 Keyboard layout not managed on Keys.event
QTBUG-90030 Persistent index handling in QAbstractItemModel is wrong
QTBUG-92886 QAbstractItemModelTester false positive removing rows with
no columns
QTBUG-92488 When a QComboBox is set to use Fusion style after changing
the size adjust policy to AdjustToContents then it will cut off the last
item in a list and force it to be scrollable
QTBUG-93736 QCombobox last item become inaccessible when a listview is
used in popup
QTBUG-42469 QTreeWidget animated crashes when QTreeWidgetItems are set
hidden to true
QTBUG-67944 If user pressed back button during application startup.
Application becomes unresponsive.
QTBUG-91385 Cannot run pdf examples on iOS
QTBUG-58013 Cursor position changes not properly passed to input
method
QTBUG-90799 Select handles Left- and RightPoint goes to the wrong
place when double tapping on a word on the widget dialog
QTBUG-90395 FTBFS: qendian.h missing include
QTBUG-61037 tst_QTimeLine::interpolation is flaky; so is frameRate
QTBUG-64446 tst_QWidget::multipleToplevelFocusCheck() on linux
QTBUG-46116 tst_qwidget fails in the CI
QTBUG-62583 tst_QNetworkReply::ioHttpRedirectPolicy() fails in the CI
with Linux Jethro armv7
QTBUG-86677 QToolBar button resize chops text
QTBUG-82339 tst_QGestureRecognizer::panGesture Two finger failed
QTBUG-88989 Build errors on Android with latest gradle
QTBUG-73990 Context Menu Items Fonts and Hotkeys Not Displaying
QTBUG-94036 tst_QAccessibilityMac::notificationsTest() fails

qtdeclarative

QTBUG-86017 DelegateModel: Warning and assert with a persisted item
QTBUG-93048 Signal and Handler Event System demo Grammatical errors
QTBUG-93404 QML Debugging : Breakpoints' internal ID is not assigned
properly
QTBUG-63673 PinchArea uses wrong coordinate system when inside a
rotated container item
QTBUG-92224 Show let type variable in Locals
QTBUG-93264 TableView: first column does not unhide when changing
column width
QTBUG-74572 When using a syntax highligher on the QQuickTextDocument,
then triggering a rehighlight does not automatically update the text
control using it
QTBUG-69577 while using both qml and JavaScriptCore.framwork, iOS app
got a non-public api references error
QTBUG-92984 Image is painted with wrong Z order
QTBUG-91716 TapHandler works only in the upper left corner of the
screen when QQuickView given another window as parent
QTBUG-94016 TapHandler cannot stop propogating event point
QTBUG-90395 FTBFS: qendian.h missing include
QTBUG-80415 segfault in software renderer inside
QSGSoftwareInternalImageNode
QTBUG-27671 QMLTest: Some subtests of
tests/auto/qmltest/events/tst_events.qml are flaky

qttools

QTBUG-49591 Qt Designer: QTableWidget : Horizontal labels are not
visible (horizontalHeaderVisible property is not saved correctly) when
in page-based container
QTBUG-85513 QTableWidget header item alignment defaults to
Qt::AlignHCenter|Qt::AlignVCenter visually but Designer shows AlignLeft
QTBUG-91558 [REG 6.0/5.15.4] lconvert can not read .qm files

qtdoc

QTBUG-88987 Update VxWorks 7 documentation to include details about
llvm support
QTBUG-56322 Qt for Android source package build error in examples

qtlocation

QTBUG-85636 [Regression] Qml Positioning with nmea source file does
not work

qtsensors

QTBUG-56322 Qt for Android source package build error in examples

qtquickcontrols

QTBUG-92444 Warning with QML FileDialog

qtquickcontrols2

QTBUG-93039 Crash when scrolling ScrollView with zero-sized item
QTBUG-92214 QML Dial with stepsize set gives unexpected result
QTBUG-91924 With the Imagine style then it is possible that the
background of a GroupBox is clipped by two pixels
QTBUG-89126 REG: ScrollView doesn't remove ScrollBar after settinging
the new one
QTBUG-93958 Crash with ScrollView + TextArea + Item when the app is
closing
QDS-4212 Changing Range Slider snap mode changes it's orientation
QTBUG-83630 Qt Quick Control 2 Tooltip can be way too big when you
have newlines

qtcharts

QTBUG-59040 QtCharts performance bad when min/max values changed
QTBUG-79218 When zooming out enough then the labels on the axes will
end up showing drawing errors

qtdatavis3d

QTBUG-91103 QML theme shows as totally dark when specified during
creation
QTBUG-65264 Using Theme3D with qtquickcompiler makes black graph

qtscxml

QTBUG-89521 When connecting to the relevant state changed signals for
a StateMachine then when running via Valgrind there is an invalid read
on exit
QTBUG-92367 [REG 5.15.2->5.15.3]: ScxmlStateMachine submitEvent should
not always expect data

qtremoteobjects

QTBUG-85795 [QtRemoteObjects] QSortFilterProxyModel sort not working
properrly

qtquick3d

QTBUG-91718 When a DirectionalLight has rotation or castShadow or a
PerspectiveCamera is in its own node then an assert can occur
QTBUG-90817 Quick3D Model bounds not set in an imported scene
QTBUG-90564 Crash if some importer plugin can't be loaded
QTBUG-93410 custom shader loading fails with qt quick compiler
QTBUG-93445 Shader cache always writes uncompressed data
QTBUG-89681 Occasionally exit abnormally during system startup
QTBUG-90677 When the default material has NoLighting set then it
causes any opacityMap set to be ignored
QTBUG-93864 1bpp PNG image can't be loaded as Quick3D 5.x Texture

Known Issues

Credits for the release goes to:

Eirik Aavitsland
Laszlo Agocs
Dimitrios Apostolou
Luca Beldi
Eskil Abrahamsen Blomfeldt
Kai Uwe Broulik
Andreas Buhr
Albert Astals Cid
Alexandru Croitor
Mitch Curtis
Giuseppe D'Angelo
Alexey Edelev
Ilya Fedin
Pekka Gehör
Maximilian Goldstein
Henning Gruendl
Nicolas Guichard
Richard Moe Gustavsen
Zhang Hao
Miikka Heikkinen
Karsten Heimrich
Ulf Hermann
Volker Hilsheimer
Allan Sandfeld Jensen
Friedemann Kleint
Michal Klocek
Jarek Kobus
Tomi Korpipaa
Fabian Kosmale
Kai Köhne
Qiang Li
Thiago Macieira
Tamás Martinec
Bartlomiej Moskal
Marc Mutz
Antti Määttä
Andy Nichols
Aleksei Nikiforov
Mårten Nordheim
Tapio Oksa
Jukka Passi
Mauro Persano
Pasi Petäjäjärvi
Samuli Piippo
Timur Pocheptsov
Joni Poikelin
Romain Pokrzywka
Lorn Potter
Konstantin Ritt
Shawn Rutledge
Lars Schmertmann
Andy Shaw
Ivan Solovev
Piotr Srebrny
Tarja Sundqvist
Paul Olav Tvete
Sami Varanka
Doris Verria
Juha Vuolle
Dongmei Wang
Edward Welbourne