I have been struggling with the same Local Network permission issue and developed the same toggling work around. This has been an issue for machines with frequent reboots. I now have a small (>250 line) Obj-C Xcode project that will show the issue. This is a bare bones app that tries to make a TCP connection to a given IP address and port. The first time the app runs, it asks for Local Network permission. It can connect once this permission is granted. After a reboot, I can demonstrate this connection failing repeatedly until the Local Network permission for the app is toggled off and then back on. I've also noticed this behavior with a third party app, Packet Sender.

Hello Quinn, Thank you for the prompt response. Here is a link to the github repo: https://github.com/James-L-Taylor/NetworkIssueTest/ The documentation folder has a zipped and unzipped version of the .app, along with a screen capture showing the problem and the current signing of the app. Thanks, James