We strive to make our jailbreak for the PS3 and PS4 almost bug-free, but of course we can not guarantee a bug-free jailbreak. Simply because in reality this is just impossible, every new software update brings new bugs and it's up to us to make a working jailbreak for the new updates. Please contact us if you ever manage to find a bug so we can release a fix(please also include which console you're currently using).