I was debating on whether I should make a new post regarding this issue or simply tag onto this old one, but as it stands right now it is still an problem for many people including myself. It's more noticeable with mods, especially when playing on CUP terrains. However, this aliasing bug can be seen in vanilla as well. FSAA on at any level will make these shimmering white lines appear around certain objects especially when there are shadowed textures behind them.