The linked study just says that it's now only up at Tel Aviv university? I'm just still rather sceptical of scenario's where the left are antisemitic outside of when they're labelled so for criticising Israel including being critical of the IHRA definition when one of the point was directly to justify censoring a holocaust survivor's free speech for comparing Israel to the Nazis.
At the same time if left governments are fearful to speak out on hate crimes committed by Islamic refugee's there's clearly an issue. At the same time you'd imagine they'd be quieter on the subject not to embolden the far right given the non-criminal refugees are being demonised already.