sheabunge
Error upon Updating custom taxonomy/term
Upon updating a custom taxonomy under a custom post type I get the following error: : call_user_func_array() expects parameter 1 to be a valid callback, function 'fix_visual_term_description_editor_style' not found or invalid function name in: /wp-includes/plugin.php on line 525
Also, when you hit the Update button, it redirects you to the All [taxonomy] page instead of just telling you the term was updated/saved where you would then click View button to see your changes made. Hope that makes sense. Seemed weird that it jumped away from the page I was editing.
And I just noticed it redirected so that the Posts button is highlighted as if I were editing a Post category.
Upon updating a custom taxonomy description it redirects here: /wp-admin/edit-tags.php?taxonomy=project_type
Would have made better sense to go here: /wp-admin/edit-tags.php?taxonomy=project_type&post_type=project
But really, it should have stayed on the page I was editing, here: /wp-admin/term.php?taxonomy=project_type&tag_ID=4&post_type=project
Hope this helps.
Regarding the second issue, for me after updating a term in a custom taxonomy I stay on the same page, under the correct post type, as your third example describes.
Perhaps this is being caused by the way you are registering the taxonomies? My tests are mostly using the defaults that accompany register_taxonomy() and register_post_type(), with only the bare minimum of arguments set.