Quick answer: Unity Burst job accessing a static field of a managed class throwing? Statics aren't Burst-compatible - mark with [SharedStatic] or use SharedStatic API.
Job references a config static; compile fails with 'managed reference'.
Use SharedStatic
static readonly SharedStatic<int> Cfg = SharedStatic<int>.GetOrCreate<Key>();Burst-compatible shared statics. Pinned in memory.
Or pass via job field
Capture the static value into a job field at scheduling. Job reads its own field.
Audit static reads in jobs
Each static reference is a candidate for SharedStatic conversion.
“Burst statics are SharedStatic. Managed statics aren't.”
If your jobs reach for statics, the SharedStatic refactor is mandatory. The fix is one-time per static.