Incorrect Cargo Bay/Planetary Mass Calculation

I'm not sure if it's the same problem as @outseeker, so I'll submit again.

First, I have a small star:
Current mass: 127,988 tons (just collected, available resources are 50kg)
Maximum mass: 128,000 tons
Minimum mass: 127988 tons
Supplementation amount/cycle: 83.3kg

I have two cargo bays, which can collect 2000kg of resources in total, but the small star can only collect 50kg of resources now. Then the rocket should collect 50kg in one cargo compartment and 0kg in the other cargo compartment.

Now launch rockets to gather resources

Click "rocket landing" to return the rocket

（ps：What is the reason why this "rocket landing" button sometimes appears? Or is this only in sandbox mode? Or this bug is actually unique to sandbox mode, not a bug）

Look, both cargo bays of the returning rocket are full。Only 25kg of resources should be collected correctly for each cargo hold