related to the gasUsed --- Different behaviours between "aleth" and "go-ethereum" for the opcode "0xfd"

[BattleBird]

when we use ./aleth-vm_1.8.0 stats --code fd the result is : when we use evm 1.9.11 to run a piece of bytecode, the result is: Whatever errors the aleth meets, it will used up all the gas provided for example, the 0xfd opcode, but the go-ethereum will refund the remaining gas to the user. Do you have any comments for this different behaviour? I think the aleth is not very user-friendly