Some guesswork here...
The official macOS client has been updated to 1.1.3. It now uses the New Layout Launcher. ...and now that the new design is working, the old one has been removed. Given that the NLL breaks under CX, and the old one is gone, XIV under CX (and I assume Wine) is fully broken. i.e. the Browser 1
trick doesn't work anymore.
Linux: Get a Windows license, and use XIVLauncher
macOS: Use the Official Client or XIV on Mac