Hi @hube2 , I’m just using the tag description out of box for posts but only adding an acf custom field to it.
The acf field is just a text field with simple
html code, because I wanted to show a featured image there. This can be achieved by using other plugins but I wanted to use acf in case I want to add more than images in the future. I was surprised to know I had to tell acf the term_id because I thought acf shortcodes would work inside tag_descriptiion the same as it would inside post_content.