This was probably an accessibility problem but prior to wordpress 5.6.1, adding categories to a post was something that was stupidly complicated to the point that it was hit and miss. I’m probably one of the best around at finding weird to reach content. I look through the source code, the document object model and every other part I can think of to find content that might be hidden in drop down menus, tabs etc. But I couldn’t find a consistent way of reaching the categories list. It was really bugging me! It put me off writing anything new on the blog for the past month. I’m delighted today. . I updated WordPress core and the plugins and now finally categories are back where I expect them again. This wonderful news deserves a blog post all of it’s own.