When a ore is mined or any other time items are dropped some disappear before others. Take the example of carrots. I harvested carrots and carrots were dropped to the ground. Maybe one or two disappeared from the whole bunch before I could collect it. They shouldn't be disappearing this soon.
MC-82045
Items disappear
Resolved
Invalid
0
Floating items are combining to floatings stacks. Observe the count in your inventory when picking up those.