**System Information**
Windows 7, Nvidia Titan
**Blender Version**
Broken: (development branch)
Worked: (not tested)
**Short description of error**
Create a row() of buttons in toolshelf creates left aligned button labels, while in all property windows the button labels are centered.
**Exact steps for others to reproduce the error**
- open attached blend file {F106829}
- run the embedded script (ALT P)
- check the new row of buttons in the tool shelf (left aligned labels)
- and compare with the new row of buttons in the data properties window (centered labels)