fix ColorPickerButton.get_popup()

scene/gui/color_picker.cpp

@@ -743,8 +743,9 @@ ColorPicker *ColorPickerButton::get_picker() {
 	return picker;
 }
 
-PopupPanel *ColorPickerButton::get_popup() const {
+PopupPanel *ColorPickerButton::get_popup() {
 
+	_update_picker();
 	return popup;
 }
 

scene/gui/color_picker.h

@@ -144,7 +144,7 @@ public:
 	bool is_editing_alpha() const;
 
 	ColorPicker *get_picker();
-	PopupPanel *get_popup() const;
+	PopupPanel *get_popup();
 
 	ColorPickerButton();
 };