Sorting Blocks

I am experiencing issues with the Sorting Activity block.  I previously had created a course with 3 cards across and the card worked find an were displayed horizontally.  Now the cards are showing vertically.  Users have to scroll to see the last card.  Is there a limit now of only two cards that will be displayed horizontally?  How can I fix this?  I tried creating a new block with three and no luck. 

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