I, too, am having the terrain paint issue. It will not stay applied. Reinstalling the game and/or repairing the game are not working as solutions for me. I have also tried adjusting the graphical settings in various ways. Please see device information below.
Name: Sims3
Version:
Build: Release
=== Rating info ===
GPU: 5 GPU Memory: 5 CPU: 4 RAM: 5 CPU Speed: 2300 Threading: 3
Adjusted CPU: 3910 RAM: 16384 Adjusted RAM: 15872 Cores: 8
Card Found in DB: 1
=== Machine info ===
OS version: Mac OS X Version 10.15.7 (Build 19H2)
OS prod type: 0
OS major ver: 10
OS minor ver: 15
OS SP major ver: 0
OS SP minor ver: 0
OS is 64Bit: 1
CPU: MacBookPro16,1
Brand: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
Family: 8
Model: 7
Cores: 8
HT: 1
x64: 1
Memory: 16384MB
Free memory: 3809MB
=== Graphics device info ===
Number: 0
Name (driver): AMD Radeon Pro 5500M
Name (database): AMD Radeon Pro 5500M [Found: 1, Matched: 1]
Vendor: ATI
Chipset: Vendor: 1002, Device: 7340, Board: 0000020f, Chipset: 0040
Driver: macOS Metal driver, Version: 0.0.0.0
Driver version: 0
Monitor: 00000000
Texture memory: 4080MB
Vertex program: 3.0
Pixel program: 3.0
Hardware TnL: 0
Absolutely! Please see attached.
Hey! This has been glitchy for me as well. I've also messed around with some settings and restarted my game when it first happened. At least this isn't ultimately game breaking haha 😅
I also have this problem. Whenever I try to use terrain paint it doesn't apply the paint and for some reason it also deletes all other terrain paint that was on the lot originally
