Writer locks up when positioning cursor at end of line

We are trying to use LibreOffice Writer instead of Microsoft Word for our work, but unfortunately the following issue is causing lots of difficulties:

Writer often simply locks up (and needs to be killed) when the text input cursor is positioned at the very end of a line, using a mouseclick. The text is Chinese, contained in a table cell and wrapped over several lines. The problem keeps happening and has led to a lot of frustration and lost work, but it’s not consistently reproducible (or at least I haven’t found out how).

This is with both LibreOffice 4.4.1 and 4.4.2 on Windows 8.1.

Is this a common problem? Is there anything I can do to avoid it? Note: I’m asking this question on behalf of another person.