in the add tags window, show tags hierarchy and last used tags in separate tabs in the same window
When tagging, the "Add tags" window always shows the list of last used tags, and a button to access the hierarchical view in yet another window.
I always use the tags hierarchy. It would be much more convenient if, for instance, the list of last used tags and the hierarchy were under different tabs on the right side of the window, and the last tab used was memorized from one call to the next.
Cédric Bourgeois shared this idea