diff --git a/AppKit/CPTokenField.j b/AppKit/CPTokenField.j
index 0fc6391f7..c223e6c4a 100755
--- a/AppKit/CPTokenField.j
+++ b/AppKit/CPTokenField.j
@@ -138,6 +138,11 @@ var CPScrollDestinationNone             = 0,
     return _autocompleteMenu;
 }
 
+- (void)_complete:(_CPAutocompleteMenu)anAutocompleteMenu
+{
+    [self _autocompleteWithEvent:nil];
+}
+
 - (void)_autocompleteWithEvent:(CPEvent)anEvent
 {
     if (![self _inputElement].value && (![_autocompleteMenu contentArray] || ![self hasThemeState:CPThemeStateAutocompleting]))
@@ -647,10 +652,13 @@ var CPScrollDestinationNone             = 0,
             if (CPTokenFieldInputOwner && CPTokenFieldInputOwner._preventResign)
                 return false;
 
-            if (!CPTokenFieldInputResigning && !CPTokenFieldFocusInput)
+            if (!CPTokenFieldInputResigning && [[CPTokenFieldInputOwner window] isKeyWindow])
             {
-                [[CPTokenFieldInputOwner window] makeFirstResponder:nil];
-                return;
+                // If we lost focus somehow but we're not resigning and we're still in the key window, we'll need to take it back.
+                window.setTimeout(function()
+                {
+                    CPTokenFieldDOMInputElement.focus();
+                }, 0.0);
             }
 
             CPTokenFieldHandleBlur(anEvent, CPTokenFieldDOMInputElement);
@@ -988,8 +996,7 @@ var CPScrollDestinationNone             = 0,
 
     var frame = [self frame],
         contentView = [_tokenScrollView documentView],
-        tokens = [self _tokens],
-        shouldShowAutoComplete = [self hasThemeState:CPThemeStateAutocompleting];
+        tokens = [self _tokens];
 
     // Hack to make sure we are handling an array
     if (![tokens isKindOfClass:[CPArray class]])
diff --git a/AppKit/CPWindow/CPWindow.j b/AppKit/CPWindow/CPWindow.j
index 01bf60f10..c1e14a813 100644
--- a/AppKit/CPWindow/CPWindow.j
+++ b/AppKit/CPWindow/CPWindow.j
@@ -1856,7 +1856,9 @@ CPTexturedBackgroundWindowMask
 */
 - (BOOL)canBecomeKeyWindow
 {
-    return YES;
+    // In Cocoa only resizable or titled windows return YES here by default. But the main browser window in Cappuccino
+    // doesn't have these masks even that it's both titled and resizable, so we return YES when isFullPlatformWindow too.
+    return (_styleMask & CPResizableWindowMask) || (_styleMask & CPResizableWindowMask) || [self isFullPlatformWindow];
 }
 
 /*!
diff --git a/AppKit/_CPAutocompleteMenu.j b/AppKit/_CPAutocompleteMenu.j
index a628314b0..00ac084a8 100644
--- a/AppKit/_CPAutocompleteMenu.j
+++ b/AppKit/_CPAutocompleteMenu.j
@@ -73,6 +73,8 @@ var _CPAutocompleteMenuMaximumHeight = 307;
 
         [tableView setDataSource:self];
         [tableView setDelegate:self];
+        [tableView setTarget:self];
+        [tableView setAction:@selector(complete:)];
         [tableView setAllowsMultipleSelection:NO];
         [tableView setHeaderView:nil];
         [tableView setCornerView:nil];
@@ -251,6 +253,11 @@ var _CPAutocompleteMenuMaximumHeight = 307;
     return [contentArray objectAtIndex:row];
 }
 
+- (@action)complete:(id)sender
+{
+    [textField _complete:self];
+}
+
 @end