Tauri, while an improvement on some aspects, is still a webapp in a shell. But it has the problem that you have to deal with browser specific quirks.
From what I understand, this will avoid that problem by compiling to whatever native platform you are building for? Also it'd not just be a webapp in a shell.
If by browser specific quirks you mean having to deal with Webkit as Windows is Chromium now.
Well, Tauri (or more specifically the 'ri' part: https://github.com/tauri-apps/wry/) uses different engines on different platforms, so I assume there's the potential for quirks.