diff --git a/modules/libpr0n/test/reftest/apng/bug546272-ref.png b/modules/libpr0n/test/reftest/apng/bug546272-ref.png
new file mode 100644
index 00000000000..85dfd8ccfd6
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diff --git a/modules/libpr0n/test/reftest/apng/bug546272.png b/modules/libpr0n/test/reftest/apng/bug546272.png
new file mode 100644
index 00000000000..5232d7f8f26
Binary files /dev/null and b/modules/libpr0n/test/reftest/apng/bug546272.png differ
diff --git a/modules/libpr0n/test/reftest/apng/reftest.list b/modules/libpr0n/test/reftest/apng/reftest.list
index f9fa5c7fd9d..a8151d5a798 100644
--- a/modules/libpr0n/test/reftest/apng/reftest.list
+++ b/modules/libpr0n/test/reftest/apng/reftest.list
@@ -3,3 +3,4 @@
 # delaytest.html delays the reftest snapshot to allow time for the
 # animation to complete.
 == delaytest.html?bug411852-1.png bug411852-1-ref.png
+== delaytest.html?bug546272.png bug546272-ref.png
diff --git a/modules/libpr0n/test/reftest/gif/reftest.list b/modules/libpr0n/test/reftest/gif/reftest.list
index 5f14758cf99..31ada281b47 100644
--- a/modules/libpr0n/test/reftest/gif/reftest.list
+++ b/modules/libpr0n/test/reftest/gif/reftest.list
@@ -7,3 +7,7 @@
 
 # a GIF file that uses the comment extension
 == comment.gif comment.png
+
+# a GIF file with a background smaller than the size of the canvas
+== small-background-size.gif small-background-size-ref.gif
+== small-background-size-2.gif small-background-size-2-ref.gif
diff --git a/modules/libpr0n/test/reftest/gif/small-background-size-2-ref.gif b/modules/libpr0n/test/reftest/gif/small-background-size-2-ref.gif
new file mode 100644
index 00000000000..b513c41aa21
Binary files /dev/null and b/modules/libpr0n/test/reftest/gif/small-background-size-2-ref.gif differ
diff --git a/modules/libpr0n/test/reftest/gif/small-background-size-2.gif b/modules/libpr0n/test/reftest/gif/small-background-size-2.gif
new file mode 100644
index 00000000000..a5e21476789
Binary files /dev/null and b/modules/libpr0n/test/reftest/gif/small-background-size-2.gif differ
diff --git a/modules/libpr0n/test/reftest/gif/small-background-size-ref.gif b/modules/libpr0n/test/reftest/gif/small-background-size-ref.gif
new file mode 100644
index 00000000000..1b656ce4396
Binary files /dev/null and b/modules/libpr0n/test/reftest/gif/small-background-size-ref.gif differ
diff --git a/modules/libpr0n/test/reftest/gif/small-background-size.gif b/modules/libpr0n/test/reftest/gif/small-background-size.gif
new file mode 100644
index 00000000000..8185eb71e8b
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