User details hover gets truncated in Recently Updated of a space

Here are the following steps to reproduce this bug:

1. Create a sample page in any space
2. Wait until it gets indexed and showed in Recently Updated of a space
3. Hover your mouse to the user and the user details gets truncated (please see attached screen shot - two.bmp)
4. However, when you clicked into that sample page and hover your mouse to the user, the user details is appearing fine
5. Even in People Directory it is showing normally

This problem only happens starting from Confluence 3.3.3 onwards.