--- truecrypt-7.1a-source/Main/TextUserInterface.cpp.orig	2017-03-10 14:07:32.880449234 +0200
+++ truecrypt-7.1a-source/Main/TextUserInterface.cpp	2017-03-10 14:11:28.843128874 +0200
@@ -1247,6 +1247,8 @@
 		if (!TextInputStream.get() || feof (stdin) || ferror (stdin))
 			throw UserAbort (SRC_POS);
 
+		wcout.flush();
+
 		line = TextInputStream->ReadLine();
 
 		if (ferror (stdin) || (line.empty() && feof (stdin)))