I set up a new webhook tonight with the “Triggered Categories” field populated. Later on, I created two new categories, one of which I set as the parent of the other new one and two existing categories, then reordered them.
Something must have went wrong when I did this because when I edited the webhook to add a new category to the “Triggered Categories” field, the field was empty. I’ve re-added all the categories to this filter and will leave the categories as they are for now because I can’t risk this webhook being triggered on private message or private category post events.
Update on this. I went to edit the webhook earlier today and noticed that the categories disappeared again after changing nothing, so I refreshed the page and then they were there in the field. FYI.
Sure. When I click the pencil icon to the right of the webhook to edit it, everything looks good with the exception of the “Triggered Categories” field being empty.