From electronic_eel’s VOUT protection testing. When subject to 6 volts the protected circuit drops back to 0 volts. This is not what I saw during testing. It stayed at about ~5.4 volts. So, I’m guessing something is wrong and the TVS diodes are actually what is kicking in.
This also seems to confirm it. I will do additional testing on the second board to see if it is a build issue or implementation issue.