It’s working now and I think it might have actually been a similar issue to this. IIRC the default sorting was overriding my sorting changes, effectively. Once I unsorted all fields I was able to sort by the ones I wanted.
Edit: Checking again in a private browser tab it looks like it defaults to sorting by the task # which isn’t obvious at first and basically overrides all other sorting. Noticing that and having to unsort the taks # column before other sorting will really work is not very obvious or intuitive I think it would be a nicer and less confusing and a better user experience if no sorting was applied by default.