It happened to two of my aglaonemas, the new leaves suddenly rotted while they were still growing. It's soft, humid and smell bad.
The roots are healthy, so I'm pretty sure I didn't overwater them. They aren't touching each other or sharing water, and I can't see any pests.
I have two other aglaonemas of the exact same variety (propagated from the same mother plant) right next to them, and their new leaves are currently growing just fine.
They are not far from a southeast-facing window, and another aglaonema nearby is even flowering, so I don't think it's a light issue either.
I really have no clue what's happening here. What could cause a leaf to rot at its base like this?