窗口调整大小后，不会重绘Gtk窗口小部件

Question

我有Gtk.Grid，在调整窗口大小后，它不会刷新（事件列和所有内容都设置正确），但是当你再次调整大小或点击项目时，它会重新绘制。

Gtk.main_iteration（）导致python3中的段错误

from gi.repository import GLib, Gtk

class Grid(Gtk.Grid):
    min_width = 400
    min_height = 300
    min_spacing = 20

    def __init__(self):
        Gtk.Grid.__init__(self, name='feed_grid',
            row_spacing=20, column_spacing=20)

        self.set_column_homogeneous(True)
        self.set_size_request(self.min_width, self.min_height)

        self.connect('size-allocate', self._on_size_allocate)

        self._cols = 2

    def _on_size_allocate(self, widget, allocation):
        self.set_width(allocation.width)

    def set_width(self, width):
        self._cols = (width + self.min_spacing) // self.min_width
        self._rebuild_grid()

    def get_columns(self):
        return self._cols

    def add_feed(self, feed):
        feed.set_order(len(self.get_children()))
        self._attach_feed(feed)
        feed.show_all()

    def _rebuild_grid(self):
        for feed in self.get_children():
            self.remove(feed)
            self._attach_feed(feed)

    def _attach_feed(self, feed):
        y, x = divmod(feed.get_order(), self.get_columns())
        self.attach(feed, x, y, 1, 1)

错误报告 https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/987565

视频 https://launchpadlibrarian.net/102937139/floaty%20resize.ogv