Issue #21402: tkinter.ttk now works when default root window is not set.
diff --git a/Misc/NEWS b/Misc/NEWS
index f191683..293b2ef 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -18,6 +18,8 @@
 Library
 -------
 
+- Issue #21402: Tkinter.ttk now works when default root window is not set.
+
 - Issue #10203: sqlite3.Row now truly supports sequence protocol.  In particulr
   it supports reverse() and negative indices.  Original patch by Claudiu Popa.