Crash log spam when using terrain scanner with biome scanner attached [Index out of bound exception]

[sybershot]

Bug Description

Although doesn't crash the game, can significantly lag the client or even freeze + eats up space. The spam itself occurs when chunk map is open through terran scanner's GUI.

Did this behavior use to work in the previous version?

No idea, I started playing 1.5.2 right away.

Steps to Reproduce (for bugs)

1. Enter the nether using glitched obsidian portal.
2. Place down terrain scanner and biome scanner, supply power to terrain scanner.
3. Start rebuilding the nether until you get crash spam in /crash-logs folder.

Logs

• Client/Server Log: 46 Megabytes of quality gibberish, i suppose; G.drive
• Crash Log:https://paste.ee/p/47O17

Client Information

• Modpack Version:1.5.2
• Java Version:1.8 271
• Launcher Used: MultiMC
• Memory Allocated: 6184 MB
• Server/LAN/Single Player: Single Player
• Optifine Installed: Yes
• Shaders Enabled: Yes, BSL v 7.2.01pre2

World Information

• Modpack Version world created in: 1.5.2
• Additional Content Installed: No

P.S. World save for testing purposes