[FIXED] [V] Sun Resistant Vampires Using Umbrellas

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? Not sure. I am up to date with the latest (31/7/18) patch
What expansions, game packs, and stuff packs do you have installed? get to work, jungle adventure, season, vampires, parenthood, cats and dogs, romantic garden stuff, get together, my first pet stuff.
Steps: How can we find the bug ourselves? Create a vampire. Give the vampire level 3 sun resistance. Make the vampire go outside on a sunny day with clear skies and no rain.
What happens when the bug occurs? When you make the vampire go outside on a clear sunny day (note: no rain), they will autonomously put up their umbrella. If yo ask them to close the umbrella, they will do so momentarily, but when you click for them to walk somewhere else, they put the umbrella straight up again. They will keep the umbrella down inside and will not autonomously put up an umbrella outside during the night. Also, it is only my vampire sims and not my human sims doing this. I suspect this is a result of the patch yesterday, which introduced the ability for non-sun-resistant vampires to go outside during the day without burning by using an umbrella to protect themselves from the sun. But, it seems that even vampires with perfect sun immunity are using umbrellas outside and cannot be prevented from doing so.
What do you expect to see? I expect to see that a vampire with level 3 perfect sun immunity would not be putting up an umbrella to go outside. Otherwise, what was the point of getting them perfect sun immunity? Note: The only mod I have ever used is MCCC. I have never used CC or any other mods.
Have you installed any customization with the game, e.g. Custom Content or Mods? Yes
Did this issue appear after a specific patch or change you made to your system? Yes
Please describe the patch or change you made. It begun after the patch yesterday (31/7/18). It has never happened before.

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I guess I could provide a screenshot, but I don't see how that would help.