TheNotepadShow
No updates... There is absolutely no Wayland support in Houdini. Possibly 21.5 or 22.0? This is just a guess.
It's quite frustrating, I upgraded to ubuntu 25 so I have this issue too.
You can fix the scrolling issue (or at least it did for me) by installing the qt5 version of houdini. Sadly, houdini isn't very stable though on wayland.
Edit: I didn't see the posts before, looks like you already tried this.