Update lib/matplotlib/axes/_base.py

sanrishi · timhoffm · web-flow · commit 6316914b761d · 2026-03-20T09:02:18.000+05:30
Co-authored-by: Tim Hoffmann &lt;2836374+timhoffm@users.noreply.github.com&gt;
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -4649,10 +4649,8 @@ def _update_twinned_axes_patch_visibility(self):
         Only the bottom-most Axes in the group (lowest zorder, breaking ties by
         creation/insertion order) has a visible background patch.
         """
-        if self not in self._twinned_axes:
-            return
         twinned = list(self._twinned_axes.get_siblings(self))
-        if not twinned:
+        if len(twinned) < 2:  # no twins
             return
         fig = self.get_figure(root=False)
         fig_axes = fig.axes if fig is not None else []
