Milen,
Thank you for looking into this for me. To my knowledge, I am using the latest versions of jqxMenu and jqxGrid. (I downloaded them two weeks ago).
I think I may have solved the issue. I noticed that each cell in the grid was being dynamically assigned a z-index based on how many records were in the grid. My grid has 26 columns and 181 records in it. The first row was assigned a z-index of 1118. The menu was assigned a z-index of 1000. I adjusted the menu’s assigned z-index in jqxmenu.js. This took care of the problem.
Thanks again.