Issue with dynamic resizing and Reanimated 4

[idlework]

When I use reanimated 4, some bottom sheets with dynamic resizing enabled no longer work. After calling function present immediately onDismiss is called and the sheet flashes shortly. It is consistently the same ones that do not work. It seems that this is because there is not enough height in the children. If I create a view with a fixed height of at least 80px, the view is rendered.

Does anyone else have this problem? Or does anyone have any idea why this might be happening? If more info is needed let me know.

Working with reanimated 3.19.0:
https://github.com/user-attachments/assets/64163bb8-5058-464e-982c-dbb9307a8780

Broken with reanimated 4.0.1:
https://github.com/user-attachments/assets/3db810c0-cdb7-44e9-b80e-1ec0b79e5568

Fixed with <View className="h-20 w-full bg-red-500" />
https://github.com/user-attachments/assets/0e345a0d-49e3-42c2-bbe5-da2cee53ad24

Packages used:

"@gorhom/bottom-sheet": "5.1.8",
"react-native-reanimated": "4.0.1",
"react-native-worklets": "^0.4.1",
"react-native": "0.80.2",

[Splanis]

I think I have the same issue. For some reason its not reproducable on snack
To make it work I have to add the prop topInsets to some big value like 500. I think if the children are less than half of screen height the modal is not presenting and I have to add topInsets screenHeight/2 or something. I noticed also that views are more than half of the screen height are being present correctly. Can somebody confirm?
The issue is only in iOS for me

Second try that renders is with topInsets set to 500

Screen.Recording.2025-07-31.at.1.50.58.PM.mov

[WailRoth]

I Had the same issue, I just downgraded for now.

[Splanis]

I Had the same issue, I just downgraded for now.

I found the fix in a comment, don't remember where. You have to set overshootClamping to false in animationConfigs. I did something like this

 animationConfigs={
        Platform.OS === 'ios'
          ? {
              ...ANIMATION_CONFIGS,
              overshootClamping: false
            }
          : undefined
      }

[WailRoth]

I can't test it anymore since my app is 'stable' for now (lol) but I will give it a try when I can! Thanks !

[Splanis]

I think with reanimated 4.0.2 is fixed btw

[idlework]

Thanks for letting us know @Splanis