System Information
Operating system and graphics card
win7, gtx560
Blender Version
2.77 22a2853
Short description of error
If you sample color and do not move cursor it will act as sample merged is not checked.
Exact steps for others to reproduce the error
Sample color i texture paint mode. Check sample merged option.
- Then sample color while holding color sample shortcut and moving cursor with mouse/tablet.
- Sample color without changing cursor positon.
https://developer.blender.org/rBS0034765208f7b22077fdd75395eb5ebb2aeb8629