Thank you for taking the time to troubleshoot this. I see! When you use "Don't load plugin assets", the assets are not loaded. I used the "Don't load plugin" option and thought that it would remove both the plugin AND the assets but this was not the case for regular expressions. On the other hand, when I used "current URL" assets are also removed when using this option.
Is this how it should work? I would prefer to totally unload plugin and assets from pages that are not needed.