Looking at those 2 conditions I’m gonna guess they will cause leakage, early failure, voiding of the manufacturers warranty and be uninsurable. Therefore if I was you I would recommend a full replacement.
Good observation, Dale.
# PA-1101: A Crash Course in Roof Venting.
Theory behind venting
The intent of roof venting varies depending on climate, but it is the same if you’re venting the entire attic or if you’re venting only the roof deck. In a cold climate, the primary purpose of ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow and to vent any moisture that moves from the conditioned living space to the attic.