First thing first, I'm sorry to admin and moderator. Please bear with me for this double post. I have something important to tell you.
Update:
So, I play my other sims in University. There are three of them. Each of them is now at their graduation days.
I try to the way that I do with my other sims before.
They are actually come into the place early, waiting there. And then...
My first sims, Thomas finally go inside at 1.30 pm. Theresia and Emmanuel still waiting, I thought that if they come early they will go inside soon! The sims who come early have a chance to go inside first though. But, it was totally random! After Thomas go inside, other sims who are not my family just barge in through! That was rude and annoying! And yet, Emmanuel is the second, he can go inside after 3 pm. And two of them graduated and earned their extra trait but just one of them that left out. She's dealing with routing issue and stuck waiting in crowded place. After 5pm, unlike Beau (last post), she's not go inside and her action to attend is canceled for unknown reason! She's not graduated (and not received her extra trait) and I am so saaaaad
Okay! So, I reloaded the game again and do things differently. I see that if three of sims standing each other while waiting, there's a huge chance for them to waiting in the same spot and after that you know that crowded and nasty things will come along. So, I assign Thomas, Theresia and Emmanuel in different door at Schmidt Memorial Stadium & Annex, there are four of them. And then I just pray and hope that this thing will work.
After 1 pm, their notification and an action to attend appear. First they are waiting in different spot.
Can you see? Their door assignment, it's totally random.
And finally three of them can get their extra trait on graduation! I feel happy for them!
In my theory, this things happening because a routing issue! This will cancel the attending ceremony interaction.
Other than that it's because your sims take too long to go inside the building. It's actually take several sims hour and
the time is very limited! Because you must go home at 9 pm. Usually these action not working properly after 5 pm
(they just go inside and go outside just like that)
I think I have a solution for you. I have try this, maybe this is work for you too.
- Be sure to come to Schmidt Memorial Stadium & Annex early, it's around 12 pm. Because the ceremony start at 1 pm.
- [Optional] Sure, invited your family and friends is surely nice, but that can make more crowd.
- Be sure to SAVE, cause you don't know something nasty will happen
- Be sure to assign your sims to different door, make them waiting in different door! There are 4 of them. Why? Because the game seems to assign your sims at random. You don't want to stuck waiting with crowd don't you?
- There rest is see are your sims take time while attending ceremony? If yes, congratulations! your sims finally can gain his/her dream trait
- If not, RELOAD the save and do these things again, because it's was so random!
I hope EA/Maxis will fix this in future patch so we will have University Life experience in peace
Additional info:
- Please not do anything funny/eat something that can make your sims nauseous before your sims attend the ceremony and when he/she attend the ceremony. I had my sims of mine eating Forbidden Fruits and he got Botanitis Minorous moodlet for 4 hours, he go inside but the action just canceled when he transform into plantsim, and he's not graduated either.