**System Information**
Windows 7 Home Premium 64-bit
AMD A10-5800: APU with Radeon(tm) HD Graphics (4 CPUs), ~3.8GHz
GeForce GTX 660
16384MB RAM
**Blender Version**
Broken: 2.76b
**Short description of error**
- When the camera is rotated to 90 degrees on the X axis, you cannot properly use the move tool with the z-axis locked and with the camera set as a viewpoint.
- Similarily, setting the camera rotation to 90 degrees on the Y axis, and 0 on the others will produce similar results.
- Again, setting the camera rotation to 90 degrees, 0 on the others, and attempting to lock the Y or X axis with the move tool, will also produce similar results.
**Exact steps for others to reproduce the error**
1. Create a standard blank scene.
2. Select camera object.
3. Change rotation properties to X: 90°, Y: 0°, Z: 0°
4. While camera is selected, use the camera as a viewport with 0 on the numpad.
5. Use the move tool and lock the z-axis by pressing the G key, and then pressing Shift+Z to lock the Z axis.
6. Observe that the camera has jarring movement and cannot be moved like normal.