I am a Blender newbie, working through the manual trying to learn modeling. I have found that when I create a new document (reload Startup file), the block object appears with the 3D manipulator showing, and when I click and drag on any of the three arrows, the movement of the block is constrained to the appropriate axis, as I would expect.
But, when I load my working document with some objects I've been playing with, the manipulators do NOT constrain the motion when I drag any of the arrows. The behavior is exactly like I'm clicking inside the white circle, but I'm definitely clicking well outside of it.
I can't seem to find any setting or mode difference that I can change to get the manipulators to work properly. Any ideas as to what obscure mode or setting I could change to restore the axis constraining behavior?
Nothing I have read in the manual suggests that there's any mode or option setting that would disable the automatic axis constraints when you drag on a manipulator arrow.
One possible clue is that I am modeling small objects just a few cm across, whereas the new document's default block is 2m across. Could my issue be caused by zooming in too far?
I have found other ways to accomplish the same axis-constrained moves, but I'd really like to use the 3d manipulator handles, and I'd like to understand why they're not working in my file.
Thanks in advance for any suggestions.