Ah, I see thank you. What was missing for me what the backspace! I was clicking in the middle of the word and saw no caret, so just thought it was not editable. I didn’t expect backspace to clear the full word, but it makes sense if we follow tag’s convention.
Maybe a colored background would help understand we’re dealing with a single chunk of text to delete. Problem is, this convention is used for tags (or email address “blocks” in clients like Gmail) and user may expect to be able to put multiple of them… but we can only put one category.
So I’ll go with this for now. Maybe it would be cool to auto-highlight the current category, so typing the first letter would immediately replace it with search text… I’m not sure if this is easy to do. If other users found out about Backspace, it should be fine too.