Qt 5.9.0 Known Issues

All platforms

• Check that your system meets Qt's requirements
• All open issues can be found from Jira: https://bugreports.qt.io
• RTA findings here: https://bugreports.qt.io/issues/?filter=18372
• CMake: Qt modules do not define

  Qt5XXX_VERSION_STRING
  

  correctly. Workaround is to use

  Qt5XXX_VERSION
  

  instead: https://bugreports.qt.io/browse/QTBUG-60936
• https://bugreports.qt.io/browse/QTBUG-61017 :Configuring Qt from sources gets stuck if trying

   ./configure + press 'c'
  

  Workaround is to use

  -confirm-license
  

• The QML profiler will not record memory allocations. See https://bugreports.qt.io/browse/QTBUG-64674

Windows

• Static builds of Qt with Microsoft Visual Studio 2017 (through Update 2) do not work and will likely crash at runtime. This is believed to be a compiler bug and therefore an update from Microsoft is required. See https://bugreports.qt.io/browse/QTBUG-59721.
• windeployqt cannot deploy ANGLE when using -combined-angle-lib https://bugreports.qt.io/browse/QTBUG-60962
• Ctrl C/V shortcuts do not work in Qt Quick applications https://bugreports.qt.io/browse/QTBUG-61086

Linux

Building Qt modules fails with binaries delivered with online installer see bug QTBUG-53865. Workaround is to build whole Qt from source or have libicu 56 installed on the system.

Qt Speech: pre-built packages do not contain the speech-dispatcher backend (QTBUG-58461).

Android

Qt for Android known issues

iOS

• QNetworkAccessManager fails to trust CA certs, breaking https, on iOS: https://bugreports.qt.io/browse/QTBUG-61053

UWP

• QtNetworkAuth/TwitterTimeline build fails for UWP: https://bugreports.qt.io/browse/QTBUG-59963
• Qt Creator uses the wrong mkspec for UWP projects using Visual Studio 2017. If you encounter errors like 'qt.winrtrunner: "<BUILDDIR>/AppxManifest.xml" does not exist.' please set the Kit's Qt mkspec to winrt-x86-msvc2017, winrt-x64-msvc2017 or winrt-arm-msvc2017 depending on target architecture. Afterwards rerun qmake, rebuild and run your application. https://bugreports.qt.io/browse/QTCREATORBUR-18288

QNX

• C++ debugging fails on QNX, see QTCREATORBUG-17901

Qt for Device Creation

• Device Creation requires QtCreator 4.3 to work due new QDB plugin.
• Virtual keyboard does not work in the sample Qt Quick application, see QTCREATORBUG-18247