Recently dialed numbers are not saved

I tried several dialers, and the problem persists. When I dial a number not in my contact list, it shows up as "Unknown" in my recently dialed list, and the number is not saved (see attached pic). This makes redialing a number not in my contacts difficult. What is the issue, and is there a solution?

Thanks for any help.

Sent from my Nexus 6 using XDA Free mobile app

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