I would refer it to a GC to look at…while those vents can work great, like any type of venting / flashing system, one must take into account the pitch.
As we all know, water can travel up hill (capillary action…negative pressure etc.) so even with a products such as this, they must be used in accordance with manufacturer instructions as well as realizing that such instructions must meet sound building principles.
I know from building homes over 30 years that not every product works as they say…nor does some of the past logic used in coming up with building codes stand the test of time (house wrap…getting homes to tight, etc). Which is part of the reason our industry exists…things can go wrong even when instructions are follow…any married man can tell you this… lol
Again, I would simply call it out and let a knowledgeable GC (or manufacturer rep)
check it out.