endnote drag and drop record into group

Using X8, dragging and dropping records into groups is not working. Used to work and normally would have a change in pointer as I click and hold and drop. Now I click and hold on a record and drag and pointer doesn’t change at all nor will record get put in grouping I intend. What gives? Right-clicking and “adding reference to” group does work.

Are you certain you are not trying to move them into a “smart group” (one with a gear icon) or a group from groups (intersecting circles)?  That is the only kind of group I can’t drag a record into?  

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Nope–wasn’t that. Weirdly the problem has gone away after a resume from sleep it seems (didn’t go away with closing down and re-opening program). Still not sure what the problem was.