[2.0.72] Burner inserter won't fuel with spoilage

[ms609]

What did you do?
I have set up burner inserters to remove spoilage from bioreactors.
Initially the burner inserter fuels itself with spoilage and operates as expected.

Probably irrelevant: each inserter has a filter set to whitelist: spoilage (no quality overlay – i.e. quality 1)

What happened?
I have returned to Gleba after several hours of gameplay to find a subset (5-10%?) of the burner inserters flashing with the "no fuel" icon, despite the associated source bioreactor having spoilage in the fuel slot and the output slot. When I add fuel using a bot, the inserter proceeds to operate as expected.

What did you expect to happen?
The inserter should fuel itself with spoilage, as soon as spoilage is available in the source bioreactor

When does it happen?
This only affects a subset of the inserters I've set up in this way (so far). My guess is that when the inserter ran out of fuel, the bioreactor happened not to contain any spoilage; and that when bioreactor contents spoil, the inserter does not repeat its check for available fuel.

Log file attached. Save game file 75MB, available on request.

[boskid]

Without a save file this bug report is incomplete.

[ms609]

Save game file available at: https://drive.google.com/file/d/1Udwrbx ... sp=sharing