I ran Logcat, here's what it says while saving:
SystemWebChromeClient: file:///android_asset/www/scripts/c3runtime.js: Line 2 : [Construct 3] Saved state to storage (63675 chars)
chromium: [INFO:CONSOLE(2)] "[Construct 3] Saved state to storage (63675 chars)", source: file:///android_asset/www/scripts/c3runtime.js (2)
Looks fine to me but the load is a bit weirder:
04-11 17:25:33.009 32717 32717 D SystemWebChromeClient: file:///android_asset/www/scripts/c3runtime.js: Line 2 : [Construct 3] Loaded state from storage (63675 chars)
04-11 17:25:33.009 32717 32717 I chromium: [INFO:CONSOLE(2)] "[Construct 3] Loaded state from storage (63675 chars)", source: file:///android_asset/www/scripts/c3runtime.js (2)
04-11 17:25:33.024 32717 32717 D SystemWebChromeClient: file:///android_asset/www/scripts/c3runtime.js: Line 2 : [Construct 3] Failed to load state from storage:
04-11 17:25:33.024 32717 32717 I chromium: [INFO:CONSOLE(2)] "[Construct 3] Failed to load state from storage: ", source: file:///android_asset/www/scripts/c3runtime.js (2)
Is the game trying to load two times in a row? First loading succeeded and then it fails? I pressed the load button only once.