SDL window decorations interfear with AccessKit's tree on Unix

Fosstodon is invite only. The email on accesskit.dev isn't reachable. I tried emailing Matt through his email on his personal Github account.

Now rests contacting you through an issue here.

So, I'm trying to set up accesskit for a Vulkan c program I make on a Nixos with Cosmic, but I build and test on Ubuntu with Gnome, because Gnome should work. But it doesn't ...
Do you have any pointers to direct me in? Or do you know of troubles with the technologies I use?
I created code with the help of Claude ai and kept in mind to use Orca's focus mode, it is connected to at-spi, ...

I really want to make this work, because I'm figuring a new way of navigating a computer. You see, an html website is actually a tree of lists and I let go the design part and use the same tree for presenting elements on screen as well as steering the screenreader. I don't know if anyone already tried that before. (also I have difficulties finding fair feedback, I think that's because it's either too experimental or either too obvious as people might think nothing about the concept futurewise)

Best regards

Start by reproducing the reported AccessKit behavior with the C Vulkan program on Ubuntu/GNOME and compare the accessibility tree with the SDL window decorations present. No source files or tests are named; the work is complete when the cause is identified and the unwanted decorations no longer interfere with the AccessKit tree, with a regression check documented.