Just two days ago I flashed a custom 4.3 ROM onto my S3 (before I was running 4.1.2). Running perfectly, no crashes, etc.
However, I noticed that when I get a missed call, a TouchWiz lockscreen widget comes on with a big, ugly, white box. It would be useful, except that I use DashClock for lockscreen notifications, and the TW widget makes itself my "home" lockscreen, and I can't trash it like the other lockscreen widget screens. There is no settings in the system settings to disable these baked-in widgets entirely, as far as I can see.
Is there any way I can disable this widget from being created (perhaps through the stock dialer?)? It only happens for missed calls, but that's that's probably because I use non-stock apps for other "notifiable" messages, like Textra for SMS, Google Voice for voicemail, etc.
I do have Xposed Framework installed with quite a few modules (including the one that allows me to use DashClock in the first place), so if there is a module available that will do this, I can easily go that route.