Qt 6.0.0 Known Issues

• Check that your system meets Qt's requirements
• All open issues can be found from Jira: https://bugreports.qt.io
  • RTA findings here
• Supported development platforms are listed here: https://bugreports.qt.io/browse/QTBUG-85851

All platforms

Many examples are still not properly ported to Qt6 in Beta1.

• When using socks proxy it may read and send data from deallocated memory when sending large amounts of data at once.
• QTBUG-89176
• Any Qt Quick Controls 2 applications that still set the Default style will not start. The fix will be available with 6.0.1. The workaround is to set a valid style. (QTBUG-89286)

Linux

• Minimum glibc version for prebuild binaries is 2.28, see https://bugreports.qt.io/browse/QTBUG-88833
  • Workaround: compile Qt 6.0.0 by yourself or update glibc to 2.28 or newer

Windows

• It is not possible to create 32 bit MSVC builds (QTBUG-89102).

Android

• Qt 6.0 for Android doesn't support multi-abi builds, it will be added in the next release (QTBUG-88841).
• When using CMake properties like QT_ANDROID_PACKAGE_SOURCE_DIR, qt_android_generate_deployment_settings(target_name) must be added after setting properties to make sure they are included in the deployment JSON file (QTBUG-88840).

Qt for Android known issues

iOS

• Using CMake to build user projects requires manual tweak. Please use qmake for now.
• Qt Creator cannot yet build iOS CMake projects (QTCREATORBUG-25058).
• Starting deployed iOS application from Qt Creator fails, see https://bugreports.qt.io/browse/QTBUG-89058
  • If you click the installed icon on the device (located on the last screen) it starts Ok.

Qt for Device Creation

• Qt Creator's wizard generated CMake applications need a workaround to be able to deploy to device. See: https://bugreports.qt.io/browse/QTCREATORBUG-25029