** I bought this expansion on the Black Friday sale, and have been playing with it, in a new save file, off and on since.
Previously, I was playing offline with game version 1.89 (and was very happy with things the way they were) - Like you, I did not want to patch, due to the amount of bugs being reported from the patch, and held off for that reason.
--I can confirm, without Mods, that my game now has many of the bugs mentioned by others, including the Mean Bug, (which I have since patched, with BossLadyTV's Mod, because my game was completely unplayable after the patch) (Find it on Curseforge)
--I also have the glitch where the Need bars are not functioning correctly. They are going up and down, but the colors are not accurate. (For instance, a full yellow bar? o.0) - that stays yellow..
--I also have the glitch with the high school students grades not going up, despite doing class work, attending classes, taking notes, and doing homework. .
---> These things are all minor, and I have MCC installed, so I can easily cheat these things up, plus the Sims Team announced plans to address them in the upcoming patch. <---
I wanted to share tho, that NONE of these things annoy me as much as what I deem to be a GAME FEATURE. I have Seasons and High School Years. That doesn't even matter anymore, since the Calendar is now base game. With the Calendar System, Holidays and Events can be scheduled, and the player could make their own calendar, changing and canceling and rescheduling and moving things to their desire. For the life of me, I CANNOT understand, why the Sims team made Football night, Cheer Night, and Career Day, festivals that CANNOT be canceled, changed, or scheduled by the player. I play my game with aging off, with each lifestage sometimes lasting a whole Sim year (or longer depending on the lifestage) I like to schedule Summers off, school holidays, birthdays, anniversaries, vacations, etc. Yet, this expansion pack COMPLETELY takes away my ability to do this. Again, I do not see this as an "oversight" I feel the Sims team thought this was actually a good idea. There is a Prom, every single weekend. (Though, if I'm being honest, you're not required to attend, so you can just attend when you want to) - BUT... the Football and Cheer festivals, cannot be changed, removed, or scheduled by you at all. Career Day is in the middle of the Summer! (Kind of puts a complete damper on my Teen's Summer Vacation plans) Especially since I have the Summer Camp Mod, by adeepindigo, and for some of the Summer, my Teens won't even be home.
....If I'm being honest, I would NOT have bought this pack, had I known these things. I guess I just assumed, that we would be able to schedule our own events, and that Prom, Career Day, Foot ball and Cheer rallies would be events that we could schedule when we wanted, like we always have been able to do, and never looked into it before buying. I REGRET buying this pack, even though I got it at a discount. I also hate how the game doesn't recognize the age of your Sim in High School. They do not start out as Freshmen. They do not have any rank or claims to how long they have been there at all, or anything to show you how long they have left. I think this WAS an oversight for sure on their part, and a missed opportunity. As I play with each life stage for so long, Its getting difficult to keep track of how long each student has been in school without a feature like this. It also makes the High School experience mundane and tiring and routine, as I cannot see what I am working toward. I am hoping, that the Mod Community will be able to address these things in the future, as this Expansion is not eligible for the Great Game Guarantee Offer, which is a shame, as I would definitely claim it (and it would be the first time (ever) that I would claim it under a Sim title.
I'm not telling you to not buy it. I'm just letting you know what you can and cannot do with this pack, so you do not also end up disappointed like I am. IF any of these things are actual "bugs" with the patch, someone please let me know, so I can "me too" on the Bug Forum and we can get them fixed ASAP. Thanks for reading.