Right, and “where two subdomains of the same site can be merged into one process” is normal right, given Site Isolation ≠ Origin Isolation. A PSL flaw is impor

Right, and “where two subdomains of the same site can be merged into one process” is normal right, given Site Isolation ≠ Origin Isolation. A PSL flaw is important, but also a low-cost fix. Thanks for pointing this out.