Oh yes, there was that (although I think he actually apologised when it was pointed out to him that the mural was anti-Semitic). But he did receive huge amounts of criticism and vitriol over the anti-Semitism issue (and a lot of those critics, or at least the ones in related to and friends with on Facebook) are still talking about it.

(ETA - I normally post the links to the Goodreads version of these reviews on Facebook, and I very deliberately didn't for this one, because I couldn't face the prospect of an argument with my anti-Corbyn relatives who I suspect will interpret any criticism of the book as actual anti-Semitism.)