[CD] [CHEAT] CAS-Spayed petd going into heat

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Often (50% - 99%)
What is your current game version number? 1.103.315.1020
What expansions, game packs, and stuff packs do you have installed? EP: High School Years, Cottage Living, Snowy Escape, Eco Lifestyle, Discover University, Island Living, Get Famous, Seasons, Cats & Dogs, City Living, Get Together, Get to Work GP: Werewolves, My Wedding Stories, Realm of Magic, Parenthood, Vampires, Spa Day SP: Paranormal, Nifty Knitting, My First Pet, Laundry Day, Toddler, Vintage Glamour, Backyard, Kids Room, Romantic Garden, Movie Hangout, Spooky, Luxury Party
Steps: How can we find the bug ourselves? Make a household in CAS that includes an adult female dog (domesticated fox to be exact, unsure if it occurs with other breeds) with reproduction set to natural. Exit CAS and play household as normal. Use cas.fulleditmode cheat and go back into CAS for that household. Set dog's reproduction to fixed.
What happens when the bug occurs? The dog will go into heat (howling, emitting heart effects) despite her sim profile showing that she is, indeed, spayed
What do you expect to see? Female dogs whose profiles show they are spayed will not go into heat, even when they were originally unspayed and only spayed through CAS settings
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? Neutral/Not Sure 

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*I chose yes on the custom content question, but all but one of the pieces are made by me, and it's all cosmetic CAS items that do not interact with pets whatsoever