[GRK] Top causes male sim with feminine frame's neck to distort

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? 1.107.151.1020
What expansions, game packs, and stuff packs do you have installed? Discover University, Island Living, Vampires, Werewolves, Realm of Magic, Get Famous, Seasons, City Living, Get Together, Get to Work, Castle Estate, Grunge Revival, Blooming Rooms, Backyard Stuff, Romantic Garden
Steps: How can we find the bug ourselves? Make a male sim with a feminine frame and pick this top.
What happens when the bug occurs? The neck of the fem-frame male sim distorts, while wearing this flannel top.
What do you expect to see? Normal, undistorted neck.
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now. I've removed them.
Did this issue appear after a specific patch or change you made to your system? No

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This happens ONLY with sims that are male with a feminine frame. When I discovered this my game was using DX9 and when I changed it to DX11 shortly after it persisted.