From 57bae94baaeb666683923c251982b2d2400c0130 Mon Sep 17 00:00:00 2001
From: Hiren <hiren.thakore58@gmail.com>
Date: Tue, 9 Jun 2026 22:06:19 -0400
Subject: [PATCH] fix: skip invalid widget rects in remove_rotation

---
 src/__init__.py       |  2 ++
 tests/test_widgets.py | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/src/__init__.py b/src/__init__.py
index bfa801be9..83b5ae12e 100644
--- a/src/__init__.py
+++ b/src/__init__.py
@@ -11933,6 +11933,8 @@ def remove_rotation(self):
                 pass
         for widget in self.widgets():  # modify field rectangles
             r = widget.rect * rot
+            if r.is_empty or r.is_infinite:
+                continue
             widget.rect = r
             widget.update()
         return rot  # the inverse of the generated derotation matrix
diff --git a/tests/test_widgets.py b/tests/test_widgets.py
index 4158f6e18..bbb21b09f 100644
--- a/tests/test_widgets.py
+++ b/tests/test_widgets.py
@@ -465,3 +465,24 @@ def test_4114():
                 widget.update()
         document.save(path_out)
     assert values == expected_values2
+
+
+def test_4950():
+    with pymupdf.open() as document:
+        page = document.new_page()
+        page.set_rotation(90)
+
+        # Simulate an existing invisible signature field with a zero-dimension
+        # rectangle. Creating such a widget through add_widget() is rejected by
+        # validation, so create a valid widget first and then modify the PDF
+        # object directly.
+        widget = pymupdf.Widget()
+        widget.field_name = "Signature"
+        widget.field_type = pymupdf.PDF_WIDGET_TYPE_SIGNATURE
+        widget.rect = pymupdf.Rect(0, 0, 10, 10)
+        page.add_widget(widget)
+        document.xref_set_key(page.first_widget.xref, "Rect", "[0 0 0 0]")
+        page = document.reload_page(page)
+
+        page.remove_rotation()
+        assert page.rotation == 0