level 1 stacks lock together?

[Douglas Westbrook]

I am having a problem  while using drawers and palettes. I am using a  
main stack to open another main stack. The first stack is a palette   
and is used to edit the second stack . The first palette stack has  
the seconds sub stacks that open as drawers in the first. This all  
seems to work normally,  but somewhere in the works all level 1  
stacks “lock together” and move as one window. I don’t  know what  
this is to look it up or how to fix it once this happens. Can anybody  
clue me in?