That’s a good point and for later reference: Time @ NethackWiki
But I never really played. At most a few times, but not enough to run into something like this.
I pretty much only played Pixel Dungeon, Shattered Pixel Dungeon, Brogue and Dungeons of Dredmor.
But this is probably more an issue for speedruns than roguelikes, because I somewhat assumed that runs should be deterministic.
No I mean that exactly the same inputs on the same seed with same class have the same results (moving, attacking, alchemy, giving talent points…), but that depends pretty much just on how RNG works. Hero’s remains break that a bit, since your last run influences your current one.