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[iOS] Animated Bug: Animations do not run correctly in React Navigation #56347
Description
Description
Hello!
I'm having some issues using the React Navigation library with the bottom tabs. I created a bottom tabs navigator, and I noticed that sometimes when I change the tab, the previous tab disappears and the focused tab doesn't show. This issue appears only when using animations for the tab switching. You can see in the reproduction example that I used "shift" animation.
I debugged the library "@react-navigation/bottom-tabs", and everything seems to be just fine, and I think the issue is in React Native, in the Animated API. The bottom tabs library animates an Animated.Value between -1 and 1, and then passes an interpolated value to the Screen. This interpolation seems to be broken.
I used version "7.15.9" of "@react-navigation/bottom-tabs".
You can find the code I'm talking about here: https://github.com/react-navigation/react-navigation/blob/f2ca954afa5a478de49489199444d7a5269df261/packages/bottom-tabs/src/views/BottomTabView.tsx#L296
Steps to reproduce
- Clone the reproducer app
- Install dependencies using "yarn"
- Start dev server
- Run the app from Xcode
- Swipe between the two tabs slow and fast many times, until you see the second tab won't render anything
React Native Version
0.84.1
Affected Platforms
Runtime - iOS
Output of npx @react-native-community/cli info
System:
OS: macOS 26.3.1
CPU: (14) arm64 Apple M3 Max
Memory: 4.64 GB / 36.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 22.13.1
path: /Users/george/.nvm/versions/node/v22.13.1/bin/node
Yarn:
version: 3.6.4
path: /Users/george/.nvm/versions/node/v22.13.1/bin/yarn
npm:
version: 10.9.2
path: /Users/george/.nvm/versions/node/v22.13.1/bin/npm
Watchman:
version: 2025.05.26.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.16.2
path: /Users/george/.rvm/gems/ruby-3.0.0/bin/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 25.0
- iOS 26.0
- macOS 26.0
- tvOS 26.0
- visionOS 26.0
- watchOS 26.0
Android SDK:
API Levels:
- "30"
- "31"
- "33"
- "34"
- "35"
- "36"
- "36"
Build Tools:
- 30.0.2
- 30.0.3
- 33.0.0
- 34.0.0
- 35.0.0
- 36.0.0
- 36.0.0
System Images:
- android-34 | Android TV ARM 64 v8a
- android-35 | ARM 64 v8a
- android-35 | Google Play ARM 64 v8a
- android-35 | Google Play Tablet ARM 64 v8a
- android-36 | Google Play ARM 64 v8a
- android-36 | Pre-Release 16 KB Page Size Google Play ARM 64 v8a
Android NDK: Not Found
IDEs:
Android Studio: 2025.3 AI-253.30387.90.2532.14935130
Xcode:
version: 26.0.1/17A400
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.13
path: /usr/bin/javac
Ruby:
version: 3.0.0
path: /Users/george/.rvm/rubies/ruby-3.0.0/bin/ruby
npmPackages:
"@react-native-community/cli":
installed: 20.1.0
wanted: 20.1.0
react:
installed: 19.2.3
wanted: 19.2.3
react-native:
installed: 0.84.1
wanted: 0.84.1
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: true
newArchEnabled: true
iOS:
hermesEnabled: true
newArchEnabled: true
Stacktrace or Logs
No logs needed.
MANDATORY Reproducer
https://github.com/gmanole01/react-native-animated-issue
Activity
gmanole01 commentedon Apr 18, 2026
bump
react-native-bot commentedon Oct 16, 2026
This issue is stale because it has been open for 180 days with no activity. It will be closed in 7 days unless you comment on it or remove the "Stale" label.
react-native-bot commentedon Oct 16, 2026
This issue is stale because it has been open 180 days with no activity. Remove stale label or comment or this will be closed in 7 days.