Exact same issue here, upgraded to macOS 27 last night, now the windows can't be dragged when connecting remotely. Everything else works fine. *I'm using nuoRDS (https://www.nuords.com/) for remote access, updated to latest available version for macOS 27 (nuoRDS Server 11 for macOS 27 Golden Gate Version: 11.0.2231.0 (BETA))