items held in hand dont render properly when going through a nether portal

when going through a nether portal, the items you hold in your hand doont render properly, and instead they just kind of flicker. this bug has been around ever since the first 1.16 beta (1.16.0.51).

 

steps to reproduce:

• hold anything in your hand 
• go through a nether portal

when going through, you will see that the item held in hand flickers