Issue #12636: IDLE reads the coding cookie when executing a Python script.
diff --git a/Misc/NEWS b/Misc/NEWS
index b17c58f..c74cb55 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -28,6 +28,8 @@
 Library
 -------
 
+- Issue #12636: IDLE reads the coding cookie when executing a Python script.
+
 - Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi
   now respect a --skip-build option given to bdist.