What probably matters to youSection of the release
What
The external helper that answers permission policy questions can now be a .ps1 file on Windows, not just an .exe. A .ps1 path containing [, ], a backtick, * or ? is rejected, because PowerShell would treat those as wildcard syntax and resolve the path to something else.
Evidence
path must end in .exe or .ps1 on Windows
Strings lifted out of the shipped bundle, so the claim above can be checked against them.