Hello, Since my bug report been archived and lost in the deep mountain, I restart a new one with all the updated ressources. TESTED WITH AND WITHOUT MODS/CLEAN SAVE, THIS BUG OCCURS ALL THE TIME. ...
I read this in the Laundry List "We’ll also be releasing a partial fix related to animations when Sims look at phones, though the main eye/eyelid issues discussed in the thread are still under investigation by the team." and I'm concerned about this, because it sounds as if you're (still) trying to fix the animations, not the eyes.
Here's my two cents: If you find yourself in a hole, stop digging.
You're trying to solve this issue backwards. This issue with eyelids is a problem for all animations that have some kind of eye movement. Not just when sims close their eyes, but also when they move their eyes and eyelids in other ways. How bad it is varies for different animations and different eye presets, but it's still there. What caused this was that you made a change to the eyes when you added eyelashes to the game.
So it's not just that sims didn't close their eyes when they slept and when they kissed. They don't close their eyes properly in any blinking animation, and there are other weird eye movements. For example, their eyes roll into their heads in many animations, like this:
This, just as sims not closing their eyes properly and other eye animation issues, didn't exist before eyelashes were added to the game.
My suggestion is that you revert back to how the eyes worked/looked like before you added eyelashes, and revert back the animations that you've already changed. After that you can make the eyelashes fit the eyes instead of trying to have the eyes fit the eyelashes and having to remake every animation.