Sorry for the delay. I got tied up machining parts for a robot this evening.
So I see the same problem with the rendering method for the viewport set to Hybrid. In Vector and Raster there’s no problem. I can’t see that you did anything wrong or missed a setting. I kind of think there’s a bug. I wonder if @trent or one of his folks could look at the file on Tuesday and see if they can sort out what is causing the problem.
Is this just a test file or something? I’m curious because of all the dimensions that don’t really make sense due to the clipping mask.
p.s. Thanks for updating your profile. That info is often helpful.