Fix SVG rendering error in _setup_plot_projector

AASMA GUPTA · AASMA GUPTA · commit a1caf126acc3 · 2025-08-30T05:36:38.000+05:30
diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
@@ -2172,6 +2172,11 @@ def update_background(self, event):
         # `release` can call a draw event even when `ignore` is True.
         if not self.useblit:
             return
+        # Skip blitting if we are saving to disk or if the backend doesn’t support it
+        if getattr(self.canvas, "_is_saving", False):
+            return
+        if not hasattr(self.canvas, "copy_from_bbox"):
+            return
         # Make sure that widget artists don't get accidentally included in the
         # background, by re-rendering the background if needed (and then
         # re-re-rendering the canvas with the visible widget artists).
