Blog Post
It looks like the change to Manage View keyword behavior has drastically changed its function. We are investigating this with a support ticket as well.
Prior to this release, if we put "coffee is amazing" (with or without quotation marks) into the keyword field it would return comments or brand posts that use that exact phrase. Now it looks like it returns anything that uses any of those words: "coffee," "is," or "amazing." This is a drastic change since we use this feature to isolate individual brand posts by putting our post copy into the keywords.
Ideally, it would respect exact phrasing in quotes and allow multiple terms in the column: "Coffee is amazing" "Tea is good" would only show those exact phrases; "Coffee is amazing", latte, mocha would return content using the phrase OR the individual words.