Just a minor grievance.
Now that the search field interprets Enter as auto-complete by default, when typing "fav:username" as the last tag in a search, one has to wait about two seconds after the completion of the username before pressing enter; otherwise it will be auto-corrected to "favfavver2."
It seems at first glance to be something we just have to live with, but it might also have a nice solution.
normally suggestions like favfavver2 would disappear when a character is typed that does not match the next character in their name, but a ":" does not accomplish the same thing.
I can't think of any case where that is useful behavior.
Something worthy of note is that typing "id:#####" does not come with the same complications. Once the semicolon is typed, all suggestions disappear.
Thank you for your time and continued work on Danbooru.