At least in the past there were cases where some registrars automatically registered the domain if someone searched for it, it may have been in cases where thei

At least in the past there were cases where some registrars automatically registered the domain if someone searched for it, it may have been in cases where their algorithm deemed the name somewhat premium. They would then essentially hold it hostage for some time, but would then cancel it during the refund period. AGP Limits policy (https://icannwiki.org/Add_Grace_Period https://icannwiki.org/Add_Grace_Period) was created to combat that (and some other issues with refunds).