Incorrect wrapping of Tamil text in itemview

[j605]

Newsbeuter version (copy from newsbeuter -v):

newsbeuter 2.10-d20cf - http://www.newsbeuter.org/
Copyright (C) 2006-2015 Andreas Krennmair
Copyright (C) 2015-2017 Alexander Batischev
Copyright (C) 2006-2017 Newsbeuter contributors

newsbeuter is free software and licensed under the MIT/X Consortium License.
Type `newsbeuter -vv' for more information.

newsbeuter 2.10-d20cf
System: Linux 4.11.8-1-zen (x86_64)
Compiler: g++ 7.1.1 20170630
ncurses: ncurses 6.0.20170527 (compiled with 6.0)
libcurl: libcurl/7.54.1 OpenSSL/1.1.0f zlib/1.2.11 libpsl/0.17.0 (+libicu/59.1) libssh2/1.8.0 nghttp2/1.23.1 (compiled with 7.54.1)
SQLite: 3.19.3 (compiled with 3.19.3)
libxml2: compiled with 2.9.4

Steps to reproduce the issue:

1. Use a Tamil feed as described in this #584.
2. Setup konsole with appropriate font, see 1.

Expected Outcome Text is wrapped correctly.

Actual Outcome The last word of every sentence is cut off and is not wrapped to the next line. It is illustrated in this screenshot where the text is cut off in newsbeuter and in the next image it is displayed properly in firefox.

[Minoru]

Confirmed with Konsole 17.04.1.