Just as the title says, the task manager does not show text next to the application icon in a vertical panel.  The expected behavior occurs with a horizontal panel.  The text can be made to appear by going into system setting and performing an action that updates icons or the desktop theme.  However, text will not appear for applications launched afterwards.

Reproducible: Always

Steps to Reproduce:
1.Set up a vertical panel with task manager
2.Make sure the task manager is set to "Switch between running applications"
3.Launch an application

Actual Results:  
Icon associated with application appears in the task manager

Expected Results:  
Icon and text associated with the application should both appear.