When deleting chunks in a region, another unrelated chunk keeps getting reset also

[GIDustin]

Describe the bug Using MCASelector to prune chunks in my world before updating to 1.20. Selecting chunks outside of my built areas. When I delete any chunk in a specific region, there is a single chunk in that region that also gets deleted. Is there something wrong with that chunk that is causing this?

To Reproduce You would need my world I guess to replicate. Open world, delete any chunk in that region, watch as another unrelated chunk also disappears

Expected behavior Only the selected chunks get reset

Screenshots and other files Attached screenshots of the issue.

Attached debug logs where I try to remove only the top right chunk in the region mcaselector.log

World is fairly large. If you need it, let me know which specific files are needed.

Environment (please complete the following information):

• OS: Windows 10
• Java version: 20? I used the windows installer on this site yesterday
• Version of MCA Selector 2.2

[Querz]

I am not able to reproduce this with a fresh 1.19.4 world in a fully generated region r.2.-1.mca with the same amount of selected chunks. Do you mind uploading those mca files here, specifically the r.2.-1.mca from the world's region, entities and poi folder (if they exist)?

[GIDustin]

Sure. I got those files in here, and on my system, the issue exists with just these 3 files.

MCASelector_Issue416.zip

[Querz]

Found the problem: When defragmenting an mca file and the chunk's data size would be too big (larger than 520192 bytes) it would skip that chunk and not save it.

[Querz]

Fixed in release 2.2.1.