We have a regular form submit event handler that just routes to another route when someone click the button. return false here prevents browser from actual form submission attempt which is desired behavior. However after installing zones this functionality was broken, the browser began to submit the form.
Removing the package helped solve the problem.
// events handler
Template.adminTranslations.events({
'submit #addTranslation': function(e){
Router.go('adminTranslationCreate');
return false;
}
});
Notes: We use iron:router and several Router.onBeforeAction hooks.