Also I’d previously had it working on Gradle 8.4 - maybe this is a dependency of some gradle plugin. Really wish there was something for tracing inputs to callers, debugging issues like this by trial and error isn’t great

Finally figured this out and have Config Cache reuse working on GitHub Actions - Android SDK is installed in the GitHub actions runner, but not Platform Tools. Therefore each run was installing platform tools, which meant a lot of files were changed during the build that were unnecessary. Preinstalling Platform Tools does the trick, but this method means the build takes about 30 seconds longer than just disabling config cache. I suspect that there is a point at which you’d overall see an advantage to turning it on (likely when configuration time is greater than 30 seconds)