[AccessD] Tab in form not working

[Rocky Smolin]

Dear List:
 
My app which has been working well in a variety of environments, suddenly
reports a problem in Windows 10 - the tab key doesn't move from field to
field at a client site.  They are using Windows 10. They can move using
Enter but tab does not move to the next field.
 
Bound form. mde compiled in 2003 and delivered in run-time using
Wise/Sagekey.
 
Any ideas?
 
MTIA
 
Rocky Smolin
Beach Access Software
858-771-1869
www.bchacc.com <http://www.bchacc.com/> 
www.e-z-mrp.com <http://www.e-z-mrp.com/> 
Skype: rocky.smolin