Issues others mentioned are the bundling of libs as well as the lack of sandboxing. But I think the developer experience of xdg-app is superior specially if you

Issues others mentioned are the bundling of libs as well as the lack of sandboxing. But I think the developer experience of xdg-app is superior specially if you just want to make a small change to an app without needing a day setting up the dev environment and maybe even another distribution for compiling the stuff.