Random zooming to extents

[tdrietz]

My C3D 2013 just started doing this last week...  I first noticed that it would zoom to extents when I operated the center mouse button for panning.  It was random, about 1 out of every 15 to 20 pans using the center button.  Someone suggested I get a new mouse.  Still did it. 

But then I noticed that it's not just the panning.  It will randomly zoom to extents when I type in a command. Earlier today, it did it when I did a REGEN, then again when I did a MAPWSPACE. 

The other notable thing is that there is no "zoom" command anywhere in the command history when this occurs. 

Besides changing the mice, I also tried rebooting and running a repair on C3D.  I have Win7-64. 

The problem seems to coincide with when I started using Autodesk 360.  Not saying it's related, but it's fishy. 

Thanks!

[dhenderhan]

Double clicking center mouse button has always invoked zoom extents for me.  It does that to me too when I get to panning too quickly.  Not sure if there is a setting for it though?

[tdrietz]

Yes, that's why I thought it was the mouse at first.  I use the double click mbutton all the time and I haven't changed my technique.  But it will do this even after typing in a command. 

BTW: you can disable the double center click zoom-to-extents by setting mbuttonpan=0.  But that also disables the center button pan function, which I can't live without. 

[Hidden_Brain]

did you try setting UCSFOLLOW to 0 (zero)?

[tdrietz]

Yep, UCSFOLLOW was already set to zero. 

[tdrietz]

Just to follow up...

In my earlier post, I mentioned this problem seemed to coincide with when I started using AutoDesk 360. 

I know this makes absolutely no sense, but I discontinued using AutoDesk 360 and disabled the cloud sync.  I have not had the random zoom-to-extents issue since.  Go figure!