This discovery was really helpful to me.  I would add that you have an option to disable BTT for a specific application.  You add Parallels as an application to the BTT app list and then there is a drop down with options including disable BTT.  Once I did that, the Parallels right click now works.  HTH.
*edit* The above fix (disabling in BTT) is not working reliably for me.  I have added the Parallels Win 10 dock helper and also the specific app involved in hopes it works better but not yet sure.  May not be as useful a workaround as I had hoped.
					 
				
			
			
			
		 
		
		
		
			
			
				Last edited: Aug 20, 2018