Why does Chrome suddenly stop autocompleting a URL for me?

Chrome used to complete cal to calendar.google.com for me, but it stopped working. At the moment I'm on 27.0.1448.0 dev on OS X, but this issue is just affecting my profile, not others, so it's not related to the version, really.

Here's what chrome://omnibox says about cal:

Provider        Type                    Relevance   Contents    URL
Search          search-what-you-typed   1300        cal         https://www.google.at/search?q=cal&oq=cal&aqs=chrome.0.57j65j60l2j0l2&sourceid=chrome&ie=UTF-8
HistoryQuick    history-url             657         https://www.google.com/calendar/    https://www.google.com/calendar/
HistoryQuick    history-url             656         https://www.google.com/calendar/render  https://www.google.com/calendar/render

Here's what I've already tried:

• Removed my entire profile's history from Chrome's personal data settings
• Removed the Default folder from Chrome and let it sync anew
• Went to Google.com and removed the past search for "cal" from the web activity

I've tried creating a new profile, typing calendar.google.com once, and it works. However, my default profile seems to be messed up in that regard. Any way I can remove the search-what-you-typed entry there?

Here's the whole output with all providers and all details listed.

Solution 1:

Since doing the same in a new profile would work as expected, it seemed there was no other option than to clear the profile. This would mean losing all my history – but I had cleared that anyway before.

I decided to first remove all of my synced data. Then, I exported my bookmarks from the Bookmarks Manager (⌥⌘B). Finally, I removed the Default folder in my Chrome's application files (~/Library/Application Support/Google/Chrome/Default) and started Chrome again.

It might be possible to migrate extensions from the Default's Extensions folder, but I've decided to re-install the four I had.

If anybody had the same issue and found another way to resolve it, I'd be glad to read about that.