re #DianneAbbot - as far as I can tell the issue is why the whip wasn't restored in a timely fashion (ie February/March)
Some may recall the Equalities & Human Rights Commission scolding Labour a few years ago. IIRC The EHRC gave six examples of concern, 3 where Labour failed to fairly treat people who had been subject to racism and 3 where the party failed to fairly treat people accused of racism - it was the latter 3 that the EHRC considered to have crossed the line into potential illegality.