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I don't believe there's any standing order to reject that sort of edit. Do you have a specific example you can link to? My guess, without having seen the edit, is that it was rejected for other reasons, such as the edit being too minor to really improve the post. If a reviewer is unaware of that "no tags in the title" policy (from 5 years ago), they could very easily choose to reject an edit only to the title, especially if other issues in the question remained unaddressed.
It looks like that's exactly what happened. I went ahead and edited the title. There really wasn't anything majorly wrong with the question, as far as I could see.
Yeah I'm going to go out on a branch here and say that taking the windows 8.1 out of the title wasn't necessary. I think the tag thing is mostly like - "Help me figure out this worksheet function - excel 2007 2010 2013 vba horseshoes"