Metal hates Zero lenght polygone Edges. if some succesive points in the contour of the poly are superimposed, that is have same XYZ vertices coords, you are dead ! RGDS

same for me after upgrading to OSX26 and XCode26. my app being huge and having many menus inside or ouside MainMenu.xib, this tons of messages overflows the Debug area, and is particularly off-putting

worst.. in XCode 26.4 right click + drag on the buttons sitting on the right of "action" and "Referencing Outlet" still draws the blue line around , but dropping into the Assistant window( aka the File's Owner.h) no longer ask to create the action or outlet, nor does it create the IBAction emtpy method in the File's Owner.m. This is a very frustrating and major regression , event if , instead of dropping in the Assistant .h, we can drop on "File's Owner" item in Placeholders which consents to display a menu of existing IBAction and Outlets. So now , no more interactive creation of IBAction and Outlets. We must create them manually in the .h before assigning them to new controls.. It also does not work from the Inpectors.