[RL] Sims changes Dynasties/Constant message after loading

I'm also experiencing this bug, plus some related weirdness. 

Both sims in the main household I'm playing with are in the Sparkles dynasty. My main sim is the dynasty head. Her brother, who's also in the dynasty, just had a baby. The brother is a Landgraab. He's not in the Landgraab dynasty, but his brothers are. He lives with the Landgraab dynasty head. 

By default, the game added his new daughter to the Sparkles dynasty, which makes sense. Before the update, new children weren't being automatically added to dynasties at all for me.

I want the daughter to be part of the Landgraab dynasty though. I switched to the Landgraab household. Immediately I was alerted that the daughter was now part of the Sparkles dynasty. I put the daughter into the Landgraab dynasty and made her the heir. The game made the change, but it didn't remove her from the Sparkles dynasty. Since she's a baby and doesn't live in the same household as the Sparkles dynasty head, I was unable to manually remove the daughter from the Sparkles dynasty.

I switched back to the Sparkles household and had the dynasty head remove the daughter, her niece, from the Sparkles dynasty (and get a bitter sentiment with a baby). When I switched back to the Landgraab dynasty household, I was immediately alerted that the daughter was now part of the Sparkles dynasty, again. And once again, I couldn't remove her.

Due to this bug, the dynasty system—which is the core feature of this expansion pack—has rendered completely useless. Please fix this as soon as possible.

Since the patch I have every time I load into my family that the kids joined the family dynasty.
Parents were made by me at the start of the save file, kids were born during gameplay (and added to the dynasty on the moment they were born). First when it was just one kid, I got the pop-up for that kid each time I loaded into my game. Now that the family has a second kid, I get the message for both kids.
The family is not a noble one. Dynasty is one I created for the family, it's not a premade dynasty.

It happened when I still had all mods disabled, and also when I have my mods back on. (but I only have a couple of small script mods running, no MCCC and nothing related to dynasties or the royal pack in general.)

I am having the pop up and in one family the father is one dynasty and the mother head of her dynasty.  The children, grandchildren, and great grandchildren are split between the dynasties.  I get pop ups when logging into a household and they are switching from the mothers dynasty to the fathers.  When I logged into the father / mother household (head of dynasty), the mother shows all the correct family members, however those are also in the fathers.  The sims that should be in the mothers but got added to the fathers, show on that sims dynasty page they are in the father.  I manually removed them by the father, get the notification that they left the dynasty but on the removed sims dynasty page, it still shows they are in the fathers.

I thought it would be worth explaining the issue I' having. So these are the following dynasty issues I'm having: 

1. I gave Cordelia and Thiago a son (Asa). He should be in the Thebe dynasty, and so should his wife (Thalia Achoa). Thalia was originally part of my own dynasty but has married into the Thebe dynasty. Asa is now (for some reason) part of the Abrantes dynasty, but also somehow heir to the Thebe dynasty. Thalia is back to being in the Achoa dynasty. Thiago is in both the Thebe dynasty and the Abrantes.

2. Sofia Abrantes married a sim from my own dynasty (Achoa), so she then became part of that dynasty. She has also left the Abrantes dynasty irl weeks before they got married. Sofia is now in both the Abrantes dynasty (from the world map) and the Achoa dynasty (from the simology panel). 

3. My sim, Reid Achoa, married Dante Monty and became part of the Monty dynasty. Reid is now part of the Achoa dynasty again. 

Mostly it seems that they revert back to their parents dynasties, like with Reid from point 3. However, Asa is somehow part of both his parent's dynasties, and Sofia has different dynasties depending on if you look at her household from the world map or her simology panel. It's a big mess essentially, but I thought actually laying out the issues I was having might help more. :)

For me, this game is more broken and unplayable than it was before the 150 bug "fix" update. Multiple fixes fixed nothing. New bugs. This is so disappointing.

It's pretty much the same for me:

Thiago has joined his mother's Abrantes dynasty but is still a member of the Thor dynasty.

In the Kappe household, everyone suddenly joined the Kappe dynasty, even though EA's story says something completely different.

And it's the same with the Monti dynasty even though members of the Monti household were pursuing their own careers, they just gave them up and switched to the nobility career.

The worst part is, if you reset everything to where all the Sims originally were, it only lasts until they leave the house or go into CAS, etc.

Immediately, notifications start popping up again saying they’ve joined other dynasties.

The story of ONDARION, so beautifully crafted by EA, is now completely ruined, and there’s nothing we can do about it.

And yet this is truly a really beautiful and interesting expansion pack!

Please fix this!

I play with the Cordelia and Thiago household, which are both in the Thebe Dynasty. Whenever I quit my game and open my save, the first message that pops up is that Thiago joined the Arbrantes Dynasty, so I have to make him quit the Arbrantes Dynasty and put him back in the Thebe Dynasty, which makes me lose some unity points or whatever it's called and some ranking (last time I played Cordelia was rank 3 and now everytime I open my save file she's back to rank 1) so I always have to "start again". I love the new Royalty & Legacy pack but honestly I haven't been able to play since the new update because it's making me rage quit. Please fix this.

Here's my experience with this issue:

Prior to the 1.124 patch, I broke Cordelia and Thaigo up and kicked Thiago out of the Thebe dynasty. No problem there.

I had Cordelia marry one of my own sims, Sebastien Martinet, and added Sebastien to the Thebe dynasty. They have three kids together, Adrian, Cordelia (VI), and Rosalina, and these kids are part of the Thebe dynasty.

However, before marrying Cordelia, Sebastien had two kids out of wedlock with other women, those kids being Keith and Alicia. They are not secret children. They are also not part of the Thebe dynasty.

After the 1.124 patch, the game keeps adding Keith and Alicia to the dynasty. If I kick them out, they get added right back in.