non-gardening plants lost their colour

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? 1.60.54.1020
What expansions, game packs, and stuff packs do you have installed? Get To Work, Get Together, City Living, Cats & Dogs, Seasons, Get Famous, Outdoor Retreat, Spa Day, Dine Out, Vampires, Parenthood, Jungle Adventure, StrangerVille, Luxury Party Stuff, Perfect Patio Stuff, Cool Kitchen Stuff, Spooky Stuff, Movie Hangout Stuff, Romantic Garden Stuff, Kids Room Stuff, Backyard Stuff, Vintage Glamour Stuff, Bowling Night Stuff, Fitness Stuff, Toddler Stuff, Laundry Day Stuff and My First Pet Stuff.
Steps: How can we find the bug ourselves? Put non-gardening plants outside but touching your house. Don't know if it's repeatable though
What happens when the bug occurs? Every time I load my save, my decorative plants are without colour.
What do you expect to see? I expect the plants to have the same colour as they did when I first placed them.
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. Latest patch, on the 16th of january 2020

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I have a mailbox with flowers that still have colour but they are at the edge of the lot and not touching the house. The plants I have touching the walls and on the patio have become almost grey. They used to be, and are supposed to be, really colourful.