Qt 6.6 Crash if there is a <tbreak/> inside an svg

Rendering that simple svg is not possible in Qt6.6

<svg version="1.2" viewBox="0 0 220 120">
    <textArea x="10" y="10" width="200" height="100" >What<tbreak/> a long  text</textArea>
</svg> 

The crash seems to be caused by the <tbreak/> in the line. If I remove it, it renders just fine but I can no longer force a line break.
This was working fine with Qt 5.15.2, on Windows and macOS

Please find attached a minimal example (CMakeLists.txt and main.cpp) as well as a screenshot of the call stack (Windows 10 x64, MSVC 2022, Qt 6.6.0) and another one of the result with Qt 5.15.2 with the same code.

Thanks