We have two lists of pinned sites: "positioned" for regular Top Sites and "non-positioned" fo A-S. Switching to Activity Stream changes which list of pinned sites is displayed, and so the user might perceive this as the browser loosing their pinned sites.
See Also: → bug 1359922
Unfortunately, I don't think there's much we can do about this now. Note that we added a SUMO link to the bottom of top sites to try to avoid confusion.
Status: NEW → RESOLVED
Last Resolved: 11 months ago
Component: General → Activity Stream
Resolution: --- → WONTFIX
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