Long NBT tag causes server to hang

[Gaprix]

Issue description

If a player picks up an item with a long NBT tag, the server will freeze for a few seconds

• Expected result: Server does not freeze
• Actual result: Server freezes while picking up an item

Steps to reproduce the issue

1. Enter creative mode
2. Place the chest
3. Copy it by pressing the mouse wheel and the control button
4. Put the received item in the chest
5. Repeat steps several times
6. Break the chest
7. Pick up an item

OS and versions

• PocketMine-MP: 4.0.3 (git hash: 795ebd1)
• PHP: 8.0.12
• Using JIT: no
• Server OS: win

Plugins

none

Crashdump, backtrace or other files

https://youtu.be/TfQ1w5yU2I8

[dktapps]

Related feature issue: pmmp/BedrockProtocol#56

[dktapps]

Should be fixed as of pmmp/BedrockProtocol@51f5399