constant cursor problem with X3

Overall I have been pleased with the new X3 version- i can finally group my references alphabetically under a single numerical reference.

However, there is one issue that has cropped up:  When using word2007, I notice a persistent glitching: the cursor blinks, the scroll bar quickly scrolls down then back. When I have a comments (under review) showing, the blinking and shifting around of the cursor becomes very annoying.  If I disable X3 cite as you write, all this stops.  I’ve enabled and disabled CAYW repeatedly and the behavior is reproducable.

It appears that Endnote is repeatedly looking through my document for reference updates, but I can’t find a way to stop it doing this.

Any ideas on what is going on?  I don’t recall X2 doing this.