Compose: Crash with SIGSEGV on Android 6.0 (arm64, API 23) after log message `resultIndex is -1, the polygon must be invalid!`

[tmcintos]

I was struggling with this crash in my Compose-based app upon tapping an icon button that opens a CascadeDropDownMenu, so I built and ran the sample app's ComposeSampleActivity locally, and saw the same problem. The app exits immediately (with no backtrace, and I can't catch it in the debugger) after this error message:

2025-02-09 19:35:03.622 10732-10766 OpenGLRenderer me.saket.cascade.sample E resultIndex is -1, the polygon must be invalid!

I tried various things including updating the project to the latest SDK, Kotlin version, etc., but those did not help.

Finally, I ran across this excellent post by the PSPDFKit team: How to Fix a Bug, Blindfolded., which mentions:

Our focus was immediately drawn to the initial scale value of the animation, which was 0.0f. [...]

Anyhow, we changed the initial value from 0.0f to 0.01f – and the crash was gone. This was by no means a fix for the crash, but definitely a proper triage.

Which led me to try this:

diff --git a/cascade-compose/src/main/java/me/saket/cascade/internal/AnimateEntryExit.kt b/cascade-compose/src/main/java/me/saket/cascade/internal/AnimateEntryExit.kt
index 4a7e492..c2d7110 100644
--- a/cascade-compose/src/main/java/me/saket/cascade/internal/AnimateEntryExit.kt
+++ b/cascade-compose/src/main/java/me/saket/cascade/internal/AnimateEntryExit.kt
@@ -52,7 +52,7 @@ internal fun AnimateEntryExit(
       tween(if (false isTransitioningTo true) InTransitionDuration else OutTransitionDuration)
     },
     label = "scale",
-    targetValueByState = { if (it) 1f else 0f }
+    targetValueByState = { if (it) 1f else 0.01f }
   )
   val alpha by isExpandedTransition.animateFloat(
     transitionSpec = {

And what do you know—the sample app no longer crashed! 🎉