rotate preview with L+R mouse button

Since I started using linuxcnc in 2008 I (think I) have been able to use the left and right mouse button together to rotate the preview in axis.

Last Friday I set up 2.7/wheezy on my workshop pc and found that L+R no longer works that way, something I had already noticed on my simulator (different pc, still on 2.6) earlier.

Looking in to the user manual for axis I found that using the shift button plus (I think) left mouse button achieves the same thing.

But what happened with the two mouse button approach?

I think I must have used it on my always up to date workshop pc forever.

Or is it just a setting that I can put back?

as far as i know noting has changed in linuxcnc , perhaps the wrong mouse driver has installed , just a thought

Weird...

I'm not sure about the mouse driver but have the workshop pc in the workshop now, the trackball is recognized and the behavior is the same as with the mouse I have at home.

I'll probably get used to it but at the moment I really miss it!