I've just downloaded "Additional Tools for Xcode 13" after today's release, and installed "Network Link Conditioner.prefPane" on my macOS Big Sur 11.6 (20G165).
But it just don't work. Every time I try to open it an error appeared.
Dose the tool only support macOS Monterey which Xcode 13.0 (13A233) dose not support?
BTW, the workaround for me is using the tool in "Additional Tools for Xcode 12.5"...