Don't leave edit mode on pressing enter if a combobox is active

js/id/ui/preset.js

@@ -159,7 +159,8 @@ iD.ui.preset = function(context) {
                     .call(field.input)
                     .selectAll('input')
                     .on('keydown', function() {
-                        if (d3.event.keyCode === 13) {  // enter
+                        // if user presses enter, and combobox is not active, accept edits..
+                        if (d3.event.keyCode === 13 && d3.select('.combobox').empty()) {
                             context.enter(iD.modes.Browse(context));
                         }
                     })

js/lib/d3.combobox.js

@@ -154,6 +154,7 @@ d3.combobox = function() {
         }
 
         function nav(dir) {
+            if (!suggestions.length) return;
             idx = Math.max(Math.min(idx + dir, suggestions.length - 1), 0);
             input.property('value', suggestions[idx].value);
             render();