It isn't offside, it should be offside, VAR is a pile of shite - but geez, football in contentious offside shocker..... it was thus before and since VAR. All that's changed is folk (fans/managers) now have even more moments to get enraged/deflect about. Get it in the bin.
Why is nobody asking Guardiola why title-chasing, billionaire City's (who apparently "played well") only effort on target in a huge derby game was a Jack Grealish header. United had Luke Shaw at centreback FFS.