[AshamedCaptain]

Welcome to Apple's much applauded security model.

More seriously, I'm sure they also prevent the privilege to that URI scheme. This is likely part of some ill-thought defense-in-depth approach. Same way they search for the names of private symbols in the exec, even when the linker will outright refuse to give you those. I absolutely detest this pervasiveness of useless layers of security that add almost nothing. But since almost nothing is not nothing, no one can remove any of them. Like cockroach papers, I'm going to call them "cockroach security". Practically everything is infested with those these days.