Certain logins should work on several different URLs. The Mac app handles this nicely, but only the first URL for each item seems to sync to Android. This is particularly problematic if you have a password that you use on a website on the desktop, but in an app (with a reverse-dns url, such as
com.agilebits.someapp) on Android.
Mac: Version 5.4.BETA-15 (540015)
Android: Version 4.2.1b4 (20150507)