[FIXED] [IL] Mermaid Tail invisible after eating kelp/aging up

I have the same issue, I've tried to change my character in CAS and she is a torso in mermaid form also.

The character was created after the installation of Island Living.

I had 2 mermaid children who both got invisible tails upon aging into teens, but going into cas and giving them a tail(they had a floating torso in CAS at first) made it visible for me, both in Cas and in Live.

@crinrictHello!!

I have uploaded my poor bugged mermaid on the gallery. My ID is the same as the name here as per usual.

I encountered the same bug when I did my test-save for watering plants. No mods was used and I have only played this sim. Got the mermadic kelp from the bbshowhiddenobjects-cheat. Just wanted to swim around in Glimmerbrook with a mermaid while testing the watering plants bug.

Ha ha, little bit funny to stumble into a new bug when I was trying to sort out another one. Let me know if you need the save, I got it in a folder.

Yes, they were mermaids born from normal gameplay between a human sim and a premade mermaid sim in the game.

I'm having the same issue with a lot of my Sims... as well as many other bugs that seem to have started happening after downloading the Magic Realm expansion pack. My main Sim is a mersim and has many children that are also mersims; some adults, some teens. 3 different things have occurred now. First, my Sim wouldn't change out of her tail and was "walking" around clumsily on land while still sporting her mer-tail. Then her and a couple of her offspring were either swimming around like they had a tail but were sporting legs or they wouldn't even acknowledge the fact that they were mer-sims and were just swimming around like normal people. Now, my main Sim is swimming around with only the upper half of her body... sometimes even swimming around through the house and on land until I shift click and reset Sim. 

Like I said, this is only one of many annoying bugs I have been experiencing since Magic Realm was downloaded. I have never used Mods on the games. 

Same here, after making my teen a mermaid by eating kelp he had no visible tail. Creating a tail in CAS fixed the problem permanently.

Product: The Sims 4
Platform:PC
Which language are you playing the game in? Русский язык
How often does the bug occur? Every time (100%)
What is your current game version number? 17.09.2019
What expansions, game packs, and stuff packs do you have installed? All expansions; all currently available game packs except Realm of Magic and Jungle Adventures; packs: Spooky Stuff, Landry Day and Cinema stuff packs
Steps: How can we find the bug ourselves? 1. Turned the character into the mermaid by eating the Mermaid fruit (got one from the Reward store) 2. Selected "Swim" in home lot
What happens when the bug occurs? Character turned to the mermaid but no tail is displayed. There are some shadows and water movement, but only upper half of the body is visible.
What do you expect to see? Both parts of the body including the tail
Have you installed any customization with the game, e.g. Custom Content or Mods? Never used.
Did this issue appear after a specific patch or change you made to your system? No

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screenshots https://drive.google.com/open?id=1gammDsQOvyCCbRWlxZe6HyO66aMTTKFV

https://drive.google.com/open?id=1xW3F5jqrtprXX54ibtAk_YfdCZ6K4F6J

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? 1.55.108.1020
What expansions, game packs, and stuff packs do you have installed? Island Living, City Living, Get to Work, Strangerville, Jungle Adventure, Dine Out, Cool Kitchen Stuff
Steps: How can we find the bug ourselves? Natural born mermaid getting in water
What happens when the bug occurs? Mermaid has no tail
What do you expect to see? A mermaid tail
Have you installed any customization with the game, e.g. Custom Content or Mods? Never used.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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My family of mermaids have no tails in mermaid form. Additionally, the one mermaid who does have a tail, hers changes every time she shifts to mermaid form (it's been black, blue and green, and now red). No option to change a tail shows up in CAS via boolprop or in the Change Sim option for a mirror.