It's true in Three Houses as well. Level-ups are rolled at mission start so if your main character's next level up is a bad level up, rewinding time won't help you.
It's also true in a general sense. If you rewind time then play out the exact set of actions the outcome will not change. However as I noted, if you alter a few actions so that the various rolls are being used differently you can end up on a different place on the table when you get back to the spot you revert from and possibly get a new result. On the same front, if you understand what rolls are occuring and can keep rack of how many are being used/how many you rewinded you can tell where that particular roll was and plan around it. Though again, level-ups are in their own area and you can't game them this way (but you can in FE7!)
That really strikes me as a bullshit way to do RNG lol. Imo
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Xbox Live User Name - Corrik Currently playing: Spider-Man (PS4), Quantum Break (X1)