Matt Chaput

Traditional Houdini UI vs QML. There are also differences with QtWidgets, even though we made them all look and work the same as much as we could.

Depends on what you mean by "use". Qt only added support for variable axes and font features in Qt 6.7 and 6.6 respectively. The next version of Houdini will upgrade to Qt 6.8, so you'll be able to use them in custom Qt UIs in the next version of Houdini.

The help is properly scaled on High DPI Mac for me, and for most people, so maybe there's something strange about your setup. If it's not working for you, please file a bug with your setup and steps to reproduce.