diff -r 2c124e30a324 Lib/idlelib/CallTipWindow.py
--- a/Lib/idlelib/CallTipWindow.py	Fri Aug 07 00:43:39 2015 -0700
+++ b/Lib/idlelib/CallTipWindow.py	Thu Aug 13 08:13:54 2015 -0700
@@ -72,6 +72,7 @@
 background="#ffffe0", relief=SOLID, borderwidth=1,
 font = self.widget['font'])
 self.label.pack()
+ tw.lift() # needed to work around bug in Tk 8.5.18+ (issue #24570)
 
 self.checkhideid = self.widget.bind(CHECKHIDE_VIRTUAL_EVENT_NAME,
 self.checkhide_event)
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://bugs.python.org/file40173/calltip.patch">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://bugs.python.org/file40173/calltip.patch" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>