I always took it in stride as being instinctual for both the vampires and weres, although it may be taken to the extreme with both Tanya and Stacia. But you could argue in Tanya’s case her extreme jealousy is part of her being a born vampire, that all her vampire abilities and instincts are turned up to eleven. Stacia could also be an extreme case due to the virus bonding with her so well.
In any event, both Chris and Dylan seem to handle it well, Chris through his bond with Tanya and Dylan through his familiarity with werewolf reactions that he learned at Arcane.