From 0844fb0ed33b01656d4cf6ff0c9cd63342611476 Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@users.noreply.github.com>
Date: Thu, 21 Jul 2022 09:05:14 +1000
Subject: [PATCH] Do not clear tile if not updating the image when seeking

---
 Tests/images/comment_after_only_frame.gif | Bin 0 -> 54 bytes
 Tests/test_file_gif.py                    |   5 +++++
 src/PIL/GifImagePlugin.py                 |   4 ++--
 3 files changed, 7 insertions(+), 2 deletions(-)
 create mode 100644 Tests/images/comment_after_only_frame.gif

diff --git a/Tests/images/comment_after_only_frame.gif b/Tests/images/comment_after_only_frame.gif
new file mode 100644
index 0000000000000000000000000000000000000000..8188b68473246080bb04e13f3a7b412aab4de3bf
GIT binary patch
literal 54
tcmZ?wbh9u|WMp7uXk<VEIv^fMoPmRdfsuuULGd4Za(-@ZYF-J0H2{#52EhOT

literal 0
HcmV?d00001

diff --git a/Tests/test_file_gif.py b/Tests/test_file_gif.py
index dbbd3bf9de9..68cb8a36e8d 100644
--- a/Tests/test_file_gif.py
+++ b/Tests/test_file_gif.py
@@ -399,6 +399,11 @@ def test_no_change():
         assert im.is_animated
         assert_image_equal(im, expected)
 
+    with Image.open("Tests/images/comment_after_only_frame.gif") as im:
+        expected = Image.new("P", (1, 1))
+        assert not im.is_animated
+        assert_image_equal(im, expected)
+
 
 def test_eoferror():
     with Image.open(TEST_GIF) as im:
diff --git a/src/PIL/GifImagePlugin.py b/src/PIL/GifImagePlugin.py
index c239a6a2bdb..2e11df54c0a 100644
--- a/src/PIL/GifImagePlugin.py
+++ b/src/PIL/GifImagePlugin.py
@@ -185,8 +185,6 @@ def _seek(self, frame, update_image=True):
         if not s or s == b";":
             raise EOFError
 
-        self.tile = []
-
         palette = None
 
         info = {}
@@ -295,6 +293,8 @@ def _seek(self, frame, update_image=True):
         if not update_image:
             return
 
+        self.tile = []
+
         if self.dispose:
             self.im.paste(self.dispose, self.dispose_extent)