Last modified: 2014-09-26 13:17:19 UTC
If I enable the book creator, go to https://pt.wikibooks.org/wiki/Categoria:Livro/Livro_de_receitas?debug=1 and click on "Add this category to your book", it takes more than 20 seconds to update the text "Show book (0 pages)". Until that happens, the user has no indication that there is something being processed, so it is tempting to click again and again in the link. Maybe add some spinner somewhere?