Ui not updating correctly

Unity Engine
,
1

The panel does not re-scale correctly (using content size fitter). To explain my problem, here are some pictures.

6785840--786425--Sans titre.png
6785840--786425--Sans titre.png2560×1440 452 KB

  1. The panel object is yet how it is at first.

6785840--786428--Sans titre1.png
6785840--786428--Sans titre1.png2560×1440 451 KB


2. Then, when I add an object, it does not rescale, despite the fact that the presets component overflows.

6785840--786431--Sans titre2.png
6785840--786431--Sans titre2.png2560×1440 454 KB


3. But, strangely, it does when I add an other one…

6785840--786434--Sans titre4.png
6785840--786434--Sans titre4.png773×1109 66 KB


4. Here are the settings of the presets object in case it is needed.

I just don’t understand why the panel isn’t re-scaling at the first time…
Is there a parameter I missed ?

Thanks for your help.

2

I fixed it by using

LayoutRebuilder.ForceRebuildLayoutImmediate(panel);

But honestly, I don’t think that is the best way to do it, so only temporary…