Once again, after being supposedly fixed many times, in 1.17.34 tridents will despawn when the chunk is unloaded. The trident will be deleted. I have personally lost many of my tridents to this bug. It completely breaks tridentkillers! With no sweeping edge, this is one of the few advantages to Bedrock Edtion. Please find a permanent fix.

I have also found passive mobs, named passive mobs, named hostile mobs, hostile mobs holding items or equipped with armor, and all other projectiles to also despawn. This still occurs in most of the 1.17 versions.