I changed my network-wide display name some time ago (from "Vikki - formerly Sean" to just "Vikki"), and the new name shows up correctly on my profile pages on the individual Stacks:
However, my network profile still shows the previous name:
I've already tried updating my network-profile info, as detailed in the answers here, but the outdated displayname still shows up on my network profile. Why is this happening, and how do I fix it?