Items are not appearing properly in nether portals

When going into a nether portal (from the nether or the overworld), items in the main hand either disappears entirely, or is partially clipped, depending on where you are looking.  I have verified this using different worlds.

 

What I expected:

nothing unusual when going into a portal

 

What happened:

Items are not showing up properly in the portal

 

Steps to reproduce:

Go into a nether portal in survival