Overall, the performance is better than before using Electron, and the process of displaying the print preview is also much faster compared to the previous version.
The extension itself works well.
Regarding the relay, there is an issue when it is opened in the first window.
However, if you open a new window from several links (using Ctrl + Click) and run the relay from that window, the relay works properly.
Additionally, if you access Manager directly from the browser at http://127.0.0.1:{{active port}}, the relay also works fine.
Tested on Windows 11, Manager version 25.8.23.2701.