No, it's not native; it looks like it uses Flutter, which implements its own UI behavior.
IMO, flutter feels even less native than web apps. At least the latter uses system font rendering, supports system-set color palettes (an option in Firefox prefs), supports system preferred keybinds for text editing, system scrollbars, etc.
IMO, flutter feels even less native than web apps. At least the latter uses system font rendering, supports system-set color palettes (an option in Firefox prefs), supports system preferred keybinds for text editing, system scrollbars, etc.