Post list: Incorrect layout when topic title is very long

Steps to reproduce:
1. Login to Forum
2. Create a topic with a very long name
(eg:wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww)
2. Open the post list on a page with the long topic title

Actual result:
Long topic title is not split into the lines. 'Info' column is much bigger than 'Message' column.

Expected result:
Long topic title is split into the lines. 'Info' column is smaller than 'Message' column.