The bug
After a large amount of TNT exploded, occasionally chunks will not load in correctly.
To reproduce
/fill ~ ~ ~ ~50 ~50 ~5 tnt
/give @p bow[enchantments={levels:{"minecraft:flame":1}}] 1
Shoot the TNT and wait
→ ❌ Some chunks might not load correctly
Related issues
testing discovered
Attachments
Comments

Can confirm; with that large of a TNT explosion I think it's just the server being overloaded. There's just so much you can do about that.

Confirmed in 1.16-pre2. Since the ticket is a little bit outdated, I would like to be the reporter of it - I'll update it accordingly.
Can confirm in 20w51a.

Can confirm in 1.17.1.

over time, the chunks will load