I am not sure when I actually lost it, but my phone is not displaying SMS when they come from my provider's voicemail in order to inform me about missed calls. I know they somehow come through as I use a web synchronisation (MightySMS) that displays the messages that arrive at my phone, including voicemail notifications via SMS (not Visual Voicemail, of course). This is both with the standard and a custom SMS app. The last SMS notification of a voicemail I can find on my device is from Oct 2013. Is this some known problem, maybe with Android 4.4? I don't suppose it's 4.4 since we didn't have had 4.4 back in October last year, as far as I remember. Any thoughts?
Edit: I am running Carbon, a CM11-based ROM, but had this before on other CM11 and possibly Sense ROMs.