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I've seen this a few time lately and I'm curious if there's a reason for it or if it's a bug.

On the front page (questions by active), this question shows that it was modified by Community recently: enter image description here

However, there doesn't seem to be any modifications since 2013...is this a bug? Or did something like a user deletion trigger this?

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  • Thanks for asking about this! – mkennedy Sep 14 '15 at 20:26
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No, it's not a bug. Basically the system looks for questions that have at least one answer but none that are accepted or upvoted. It then performs a 'non-edit' to bump them to the top of the active view with the hope they attract attention and get 'resolved'. It's basically the system trying to clear the Unanswered view - an upvote on any answer removes it from that category, even if not accepted.


Here's a SE Meta post that has the details: What can cause a question to be bumped?

• The Community user will bump non-negatively scored questions that have at least one answer scoring 0 and none scoring more than that.

• Questions are picked randomly from the top-viewed inactive questions.

• The number of unanswered questions bumped per hour depends on the site: 4 per hour on Stack Overflow, 1 per hour on Meta, and 2 per hour on Super User and Server Fault. The default for a new site is 1 per hour.

More info about the Community user can be found at Who is the Community user?

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