I had a go at fixing the ''checkaII'' bug in the user privilege dialogs (bug #3188444). It occurs because every element id on the page must be unique, but all the forms are assigned the same id, namely ''addUsersForm''. The ''Add a new User'' dialog is also affected by this, as well as all db-specific permission dialogs. I have created a patch that appends a large random number to the ids of forms. While maybe not the best solution, it does work. A better way to fix this may be to instead use a counter (or maybe even the token), but I didn't
manage to implement that. Please find the patch attached.