Some build system issues have been identified in Qt. A linker error in QtWebEnging with system libvpx built without the vp9 encoder was fixed for
Qt 6.4.3, 6.5 and all future versions. Qt 6.5 removed the need for a perl interpreter during build, but when using the builtin libopus for QtWebEngine this resulted in errors.
For crossbuilds the information for system icu is not properly picked up. It was also identified that translation files for deactivated components are still installed.