Difference in render and Open GL views

Hello ! I have a problem : my rigg (back view) looks good only in render View. Once in Opend GL - his head is not visible. Thank you for your help !

Odd!

Can you drop your file in here so that I can have a look? Thank you!

Here: https://fileshare.toonboom.com/wl/?id=yrwIvR7jGPiio4P30mmmaG1aED2dnKh9