I'm investigating a problem where the map view shows a pin image on some of our Android devices, but not on others. APK is the same. The annotations are there, since you can click on them, they're just not visible. The same image is used in the dialog that pops up when clicking on an annotation and there it is visible, just not on the map itself. Another pin image from the same directory is shown, too, so it's not a problem with images in general. Building the app with TiShadow (--appify), the images are visible on all devices, too.
I tried cleaning the project and re-exporting the problematic image (thought it might have to do with an overly aggressive PNG optimizer or such), but nothing so far has helped. I also tried re-setting the image after a short delay, just in case there's some kind of race condition here, didn't help either.
Any ideas?