Help with Nudge, nudging by follow snap settings not working.

Hoping someone can help with this!
 
My nudge by absolute time (frames and ticks) and by musical time works fine...
 
But for some reason, nudge by snap settings is not working... at least not the way I expect.
 
If the note I'm trying to nudge is to the left my now time marker, hitting nudge right by snap settings, regardless of my snap setting, and regardless of the time distance of the note from the now time marker, will nudge the note all the way to the now time marker.  And vice versa for the note on the right and nudging it left by snap settings...
 
The weird thing is if my note is to the right and I try to nudge it right by snap settings, it does this:
 
Each time I hit nudge right by snap setting (currently my '9' key) it will
1) Nudge right by time difference of note from now marker and then for successive hits, it will
2) Nudge right by double the previous nudge.
 
I have no idea why this is the case.  My snap settings look pretty straightforward, and I've tried this right away, starting up Sonar and using the --Blank Project-- template as well as other various packaged templates.
 
Hope someone can shed some light on this, or point me to where I can have this working like before...