[FIXED] Enabling auto-lights resets light dimmer settings

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? n/a
What expansions, game packs, and stuff packs do you have installed? Get to Work, Get Together, City Living, Cats and Dogs, Seasons. Outdoor Retreat, Spa Day, Dine Out, Parenthood. Luxury Party, Perfect Patio, Cool Kitchen, Movie Hangout, Romantic Garden, Kids Room, Backyard, Vintage Glamour.
Steps: How can we find the bug ourselves? Change the light dimmer settings and then enable auto-lights.
What happens when the bug occurs? When the light dimmer settings are changed and auto-lights enabled, the light dimmer settings reset to the maximum brightness.
What do you expect to see? Modifying the light dimmer settings then enabling auto-lights should not reset the light dimmer settings to the maximum brightness.
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? Yes
Please describe the patch or change you made. It was either after installing the Seasons Expansion Pack or after installing the latest patch after Seasons.

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Ever since installing seasons and the patch after that, my light dimmer settings are being reset when I enable auto-lights. I've tried running it vanilla, and even removed my entire TS4 folder from My Documents. I have also repaired the game from origin.

Crinrict asked me to post a new thread