Resolved How to debug JobHandles?

I am getting this

The previously scheduled job ECSGrassSystem:PackPositionJob reads from the Unity.Collections.NativeList`1[System.UInt16] PackPositionJob.source. You must call JobHandle.Complete() on the job ECSGrassSystem:PackPositionJob, before you can deallocate the Unity.Collections.NativeList`1[System.UInt16] safely

which by all means should be impossible, as I explicitly JobHandle.Complete() all instances of said job I can think of. Surely I might have missed one somewhere somehow, but I don't know how or how to figure out which. How does one debug such an issue?

 

Without code we can't really help
That error really should tell you everything you need.

 

Look for all instances of PackPositionJob and immediately complete their job handles. Then undo those changes one by one until the error shows up again.

 

There is no tool that keeps track of where each job was scheduled and if they are not finished yet? Because, well, it will take a lot of time to make one myself.

I really can't figure out how and why it wouldn't be complete if I had explicitly called

.complete()

.
(I ended up figuring out the issue in the middle of making a giant post explaining how it works, one of my methods was missing a boolean optional parameter to ensure that all jobs get finished this frame regardless of how long they take so they can be disposed of)