Fix tree drawing the pressed stylebox in all buttons in the column

scene/gui/tree.cpp

@@ -1030,7 +1030,7 @@ int Tree::draw_item(const Point2i& p_pos,const Point2& p_draw_ofs, const Size2&
 
 				Point2i o = Point2i( ofs+w-s.width, p_pos.y )-cache.offset+p_draw_ofs;
 
-				if (cache.click_type==Cache::CLICK_BUTTON && cache.click_item==p_item && cache.click_column==i && !p_item->cells[i].buttons[j].disabled) {
+				if (cache.click_type==Cache::CLICK_BUTTON && cache.click_item==p_item && cache.click_column==i && cache.click_index==j && !p_item->cells[i].buttons[j].disabled) {
 					//being pressed
 					cache.button_pressed->draw(get_canvas_item(),Rect2(o,s));
 				}