As an user that uses the tagging and collection features a lot, I want to use the backspace key to delete the previous tag/collection entry, because 1. it’s faster than using mouse/touchpad; and 2. queries to match the tag/collection string are becoming so slow and leading to errors that it is very frustrating having to use the mouse to delete the [previous] wrong entry.
Great feature request.
Not sure when we get to it, but I’ll put it on our roadmap. Maybe a contributor takes it up?