Backport PR #16929: tk: Resize the canvas, not the figure.

dstansby · meeseeksmachine · commit 89bcf96ab83a · 2020-03-27T11:10:47.000Z
diff --git a/lib/matplotlib/backends/_backend_tk.py b/lib/matplotlib/backends/_backend_tk.py
@@ -460,7 +460,7 @@ def _get_toolmanager(self):
         return toolmanager
 
     def resize(self, width, height):
-        self.canvas._tkcanvas.master.geometry("%dx%d" % (width, height))
+        self.canvas._tkcanvas.configure(width=width, height=height)
 
         if self.toolbar is not None:
             self.toolbar.configure(width=width)
