diff --git a/lib/matplotlib/backends/backend_webagg_core.py b/lib/matplotlib/backends/backend_webagg_core.py
index ceb43ba32808..30805317c307 100644
--- a/lib/matplotlib/backends/backend_webagg_core.py
+++ b/lib/matplotlib/backends/backend_webagg_core.py
@@ -251,6 +251,7 @@ def handle_resize(self, event):
         # identical or within a pixel or so).
         self._png_is_old = True
         self.manager.resize(w, h)
+        self.resize_event()
 
     def handle_send_image_mode(self, event):
         # The client requests notification of what the current image mode is.