[OPEN] [GRO] Robles or Robles-Ruano: Romance bar between siblings

Product: The Sims 4
Platform:Steam-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? 1.96.365.1030
What expansions, game packs, and stuff packs do you have installed? All EXCEPT Journey to Batuu GP and Pastel Pop kit
Steps: How can we find the bug ourselves? Open a new save and find the Robles or Robles-Ruano family in San Sequoia; Start live mode to play this family, and check out the relationship bar between Jay Robles and Bernice Robles in the relationship panel.
What happens when the bug occurs? There is a little negative romance bar between them two who are siblings indeed.
What do you expect to see? It may a development bug, I think their relationship is "dislike" with a negative friendship bar, because of their distant family dynamic.
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now. I've removed them.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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It shows they are siblings.

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