Direct answer

Known 1.0 issue: the drone station upgrade stops accepting more garden veg stew and splits already-added items, blocking progression. A targeted fix is pending; try re-adding inputs one at a time as a workaround.

Problem record

FieldValueEvidence
SymptomStation won't accept more stew; items splitOBSERVED
SystemDrones / stationOBSERVED
SolutionUnder investigation; workaround: add one input at a timeCOMMUNITY
Affected build1.0 (launch window)OBSERVED
Evidence note

Logged from current 1.0 community reports; updated when a patch lands (updates hub).

OBSERVED

Source: Steam community discussion during launch week.

Steam discussions

If the fix ships in a patch, this record updates with the fixed build marker.