diff --git a/lib/matplotlib/backends/backend_qt5.py b/lib/matplotlib/backends/backend_qt5.py
index f3d1c6459900..b36e6564287b 100644
--- a/lib/matplotlib/backends/backend_qt5.py
+++ b/lib/matplotlib/backends/backend_qt5.py
@@ -498,17 +498,16 @@ def draw_idle(self):
QtCore.QTimer.singleShot(0, self._draw_idle)
def _draw_idle(self):
- if self.height() < 0 or self.width() < 0:
- self._draw_pending = False
if not self._draw_pending:
return
+ self._draw_pending = False
+ if self.height() < 0 or self.width() < 0:
+ return
try:
self.draw()
except Exception:
# Uncaught exceptions are fatal for PyQt5, so catch them instead.
traceback.print_exc()
- finally:
- self._draw_pending = False
def drawRectangle(self, rect):
# Draw the zoom rectangle to the QPainter. _draw_rect_callback needs
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