Lag May Cause fire to stack in a portal frame and not light it

Lag May Cause fire to stack in a portal frame and not light it

Entities were not moving during this, My Render Distance was 2, Simulation Distance was 5, i could break & places blocks, couldn't change gamemode, spyglasses worked, couldn't get advancements, only happened in the nether & and couldn't leave the world without restarting my laptop

 

*I Have Not Tested This On Any Other Version (But it only happened it my snapshot world so most likely just the snapshot