For info, it seems that something happened in the latest version of XLabs Forms and the HybridWebView (released today?). I use it to load bundled resources, as well as files saved in the app's documents, but on iOS this no longer works. It can't find the files with the same paths I usually use. It appears to work on Android.
I'll stick to the old version for now, but before before trying to debug things, can you tell me if anything changed in this version?