Saw the buggy comment here
The whole idea is to see if anything is missing or needs to be added to the existing snapshot or in terms of configuration to fix the roaming behavior, and I am not the only one complaining about this. Its pretty much most users who have two routers. probably for users running on one router, it doesn't affect them.
And we are curious to know how Xiaomi could pull this off on their existing firmware by running something under the hood. From what I know it doesn't have any 802.11k/v/r features enabled by default.