Work around blur issue for #439

NOTES.md

@@ -293,6 +293,13 @@ webkit doesn't let querySelectorAll select camelcase elements:
 * https://bugs.webkit.org/show_bug.cgi?id=83438
 * https://github.com/mbostock/d3/issues/925
 
+Firefox does not fire a `blur` event when an element is removed from the DOM,
+unlike WebKit browsers.
+
+Firefox does not support [the focusout event](https://bugzilla.mozilla.org/show_bug.cgi?id=687787).
+
+Opera does not support `pointer-events` on HTML elements, only SVG elements.
+
 ## Transients
 
 The graph supports `transient`, which is storage for non-versioned mutable

js/id/modes/select.js

@@ -150,10 +150,15 @@ iD.modes.Select = function(entity) {
         if (entity) {
             changeTags(entity, inspector.tags());
         }
+
         d3.select('.inspector-wrap')
             .style('display', 'none')
             .html('');
 
+        // Firefox incorrectly implements blur, so typeahead elements
+        // are not correctly removed. Remove any stragglers manually.
+        d3.selectAll('div.typeahead').remove();
+
         behaviors.forEach(function(behavior) {
             behavior.off(surface);
         });

js/id/ui/inspector.js

@@ -149,9 +149,12 @@ iD.ui.inspector = function() {
                 });
                 if (d.key && d.value) {
                     taginfo.docs(params, function(err, docs) {
-                        var en = _.find(docs, function(d) {
-                            return d.lang == 'en';
-                        });
+                        var en;
+                        if (!err && docs) {
+                            en = _.find(docs, function(d) {
+                                return d.lang == 'en';
+                            });
+                        }
                         if (en) {
                             var types = [];
                             if (en.on_area) types.push('area');
@@ -170,7 +173,7 @@ iD.ui.inspector = function() {
                     });
                 } else if (d.key) {
                     taginfo.values(params, function(err, values) {
-                        if (values.data.length) {
+                        if (!err && values.data.length) {
                             iD.ui.modal()
                                 .select('.content')
                                 .datum({