Thanks, I'll give this a read!
Magit is working fine again. I closed the issue where magit showing the text only view of the diff in magit status. Now magit is working again, you can always try out my latest update to the Clojure layer keybindings and see if they work for you. I would be interested to hear if anything is missing or seems illogical / akward https://github.com/syl20bnr/spacemacs/pull/13215