java.lang.IllegalArgumentException: Comparison method violates its general contract!

[topg-org]

Minecraft's Version

paper-1.21-103

Plugin's Version

SuperiorSkyblock2 v2024.3-b341 (dev)

Describe the bug

[Server thread/INFO]: [!] Island → Recalculating all islands...
[WARN]: [SuperiorSkyblock2] Plugin SuperiorSkyblock2 v2024.3-b341 generated an exception while executing task 8472
java.lang.IllegalArgumentException: Comparison method violates its general contract!
at java.base/java.util.TimSort.mergeLo(TimSort.java:781) ~[?:?]
at java.base/java.util.TimSort.mergeAt(TimSort.java:518) ~[?:?]
at java.base/java.util.TimSort.mergeForceCollapse(TimSort.java:461) ~[?:?]
at java.base/java.util.TimSort.sort(TimSort.java:254) ~[?:?]
at java.base/java.util.Arrays.sort(Arrays.java:1308) ~[?:?]
at java.base/java.util.ArrayList.sort(ArrayList.java:1804) ~[?:?]
at SuperiorSkyblock2-2024.3-b341.jar/com.bgsoftware.superiorskyblock.island.container.DefaultIslandsContainer.sortIslandsInternal(DefaultIslandsContainer.java:187) ~[SuperiorSkyblock2-2024.3-b341.jar:?]
at SuperiorSkyblock2-2024.3-b341.jar/com.bgsoftware.superiorskyblock.island.container.DefaultIslandsContainer.lambda$sortIslands$8(DefaultIslandsContainer.java:150) ~[SuperiorSkyblock2-2024.3-b341.jar:?]
at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:86) ~[paper-1.21.jar:1.21-103-aa3b356]
at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) ~[paper-1.21.jar:1.21-103-aa3b356]
at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[paper-1.21.jar:?]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]

To Reproduce

Idk exactly, all data is in mysql, nothing weird no null or absent values

Additional Information

No response

[OmerBenGera]

I don't know why it occurs, but I added debug message to when it occurs to print more information regarding the error.
Please update to latest dev build and report back once it occurs again so I can look at the debug data that is printed.