AzureSignTool incorrectly identifies unsigned files as signed

Some time ago a fellow I’m following on a Twitter, Marc-André Moreau posted an interesting tweet: Okay, this is the weirdest thing: we call AzureSignTool with ‘-s’ to skip signing already signed files, and it… incorrectly thinks one of our native DLLs is already code signed when it is not… for *both* x64 and arm64. […]