Merge pull request matplotlib#24677 from tacaswell/fix/hostaxes_remove

FIX: do not replace the Axes._children list object

Author: ksunden

lib/mpl_toolkits/axes_grid1/parasite_axes.py

@@ -136,7 +136,7 @@ def draw(self, renderer):
             self._children.extend(ax.get_children())
 
         super().draw(renderer)
-        self._children = self._children[:orig_children_len]
+        del self._children[orig_children_len:]
 
     def clear(self):
         super().clear()

lib/mpl_toolkits/axes_grid1/tests/test_axes_grid1.py

@@ -684,3 +684,14 @@ def test_imagegrid():
     im = ax.imshow([[1, 2]], norm=mpl.colors.LogNorm())
     cb = ax.cax.colorbar(im)
     assert isinstance(cb.locator, mticker.LogLocator)
+
+
+def test_removal():
+    import matplotlib.pyplot as plt
+    import mpl_toolkits.axisartist as AA
+    fig = plt.figure()
+    ax = host_subplot(111, axes_class=AA.Axes, figure=fig)
+    col = ax.fill_between(range(5), 0, range(5))
+    fig.canvas.draw()
+    col.remove()
+    fig.canvas.draw()