Issue with Fuzzy Matching

[PBIDevNoob]

I have a table with a column called comments. I did a fuzzy match on the column to find out if comments are roughly similar with each other (this probably isn't the best way to do it). 

For some reason a comment that's very similar with each other didn't come up as a match, even though I didn't . I filtered the table to only include these 2 comments, and refreshed it again. Then it worked and I got a match. 

Is there a limit on the size of the table? Why is this happenning?