Has anyone encountered this iOS-only crash with `L...

# multiplatform

[Sagar Khurana]

Has anyone encountered this iOS-only crash with LazyVerticalStaggeredGrid + Paging3?

Crash: kotlin.NoSuchElementException in SortedSet.nonJvm.kt:98 - removeLast() called on empty list

Context:
- Crash happens 1-2 seconds after launch when scrolling a LazyVerticalStaggeredGrid
- Using Paging3 with collectAsLazyPagingItems()
- Crash is in framework code (compose-multiplatform-core), not app code
- Android works fine with identical code

Versions:
- Compose Multiplatform: 1.9.3
- Kotlin: 2.2.21
- Paging Compose: 3.4.0-alpha03
- Device: iPhone 16 Pro (iPhone18,3), iOS 18.1

Stack trace:

kotlin.NoSuchElementException
  kfun:kotlin.collections#removeLast (MutableCollections.kt:257)
  kfun:androidx.compose.ui.node.SortedSet#remove (SortedSet.nonJvm.kt:98)
  kfun:androidx.compose.ui.node.DepthSortedSet#remove (DepthSortedSet.kt:78)
  kfun:androidx.compose.ui.node.MeasureAndLayoutDelegate#onNodeDetached (MeasureAndLayoutDelegate.kt:755)
  ...
  kfun:androidx.compose.foundation.lazy.staggeredgrid.LazyStaggeredGridState.onScroll (LazyStaggeredGridState.kt:312)

The crash flow: scroll gesture → onScroll → forceRemeasure() → subcompose() → LayoutNode.detach() → DepthSortedSet.remove() → SortedSet.remove() → removeLast() on empty list

I couldn't find an existing issue for this. Has anyone seen this or know of a workaround? Planning to file on YouTrack if this is new.

[Ivan Matkov]

CMP-8935 "NoSuchElementException: List is empty" when detaching LayoutNode

[Sagar Khurana]

https://youtrack.jetbrains.com/issue/CMP-9402/iOS-NoSuchElementException-in-SortedSet.nonJvm.kt-during-LazyStaggeredGrid-scroll

ive also posted a detail issue here as well

[Sagar Khurana]

this crash is blocking my iOS app release 😢

[Sagar Khurana]

@Ivan Matkov Is the fix release already released for the above issue?

[Sagar Khurana]

Any ETA on when the 1.10.0-rc02 with the fix will drop?

[Sagar Khurana]

cc @Ekaterina Zaitseva

[Ekaterina Zaitseva]

Hi! Thank you for sharing your case.
ETA for 1.10.0-rc02 ~ today/tomorrow, in an exceptional case - next week

[Sagar Khurana]

Is there a workaround for this fix without waiting for 1.10.0-rc02 next week in case of an exceptional case?

As it's blocking my v1 release for the Apple App Store and thanks for the responsive replies 🙏

[Ivan Matkov]

This fix is a workaround itself for the issue in stdlib. Nothing to do aside for update from app side.

But I don't think that it will be an "exceptional case":
This version is already built and you can use it from our dev repo (not maven central) even now

[Ivan Matkov]

https://kotlinlang.org/docs/multiplatform/compose-compatibility-and-versioning.html#development-versions-of-compose-multiplatform

maven("<https://maven.pkg.jetbrains.space/public/p/compose/dev>")

[Sagar Khurana]

thank you frog thank you frog thank you frog

[Ekaterina Zaitseva]

1.10.0-rc02 released

[Sagar Khurana]

I'm working on it, testing against the new version. Hopefully, it doesn't crash now

[Sagar Khurana]

Its not crashing at all!!!

Thanks a bunch 🙌