The android App is showing this for Meta Sites:
And the app crashes if you click on it.
A couple of workarounds according to comments on the HTTPS discussion over on Meta.SE (linked above by @Unionhawk), you can try manually removing and re-adding the affected site(s), or even simply logging out and back in to the app:
...log out completely in the app and log back in (it requests the list of all sites from the Stack Exchange API on login).
– Kasra Rahjerdi ♦ Mar 16 at 19:23