I wrote a post at the start of this year when Microsoft released their Windows 18362 build, and Reshade having a problem with it, the fix I mentioned was a last resort as it meant you’re computer wasn’t up to date, but after doing some research, I found out another fix that doesn’t require you to use an older version of Windows 10.
First, make sure Origin is open as this is where you will be making the change. Once open, up top where you see Origin – Games – Friends etc, click on Origin. Then go to Application Settings and then “Origin in Game“.
You want to make sure “Enable Origin in Game” is disabled. Once disabled, try launching The Sims 4 and loading into a family and the rotation bug should now be resolved without having to downgrade your version of Windows 10.