@AndreaLindson I've merged your post into the master thread for this issue. It's usually caused by a more columns mod. Remove it or get a version updated for the recent patch, and delete localthumbcache.package.
Product: The Sims 4
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? 18.104.22.1680
What expansions, game packs, and stuff packs do you have installed? I have all expansion packs, all game packs except Outdoor Retreat, and for stuff packs I have Laundry, Vintage, Backyard, Movie, Kitchen, Patio and Luxury.
Steps: How can we find the bug ourselves? I have a picture of it.
What happens when the bug occurs? I cannot see most of the CAS items because there is a big white blob over them.
What do you expect to see? All of the items.
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. After the last June patch was made it started doing this and has not changed after the July patch.
I have a picture of what it looks like.
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Please only contact me via PM when asked to do so.