Nintendo and The Pokemon Company have delivered on the Pokemon FireRed and LeafGreen ports on the Nintendo Switch improving things over the original versions. Today, it has emerged that the Roaming Roar bug that plagued the originals has been fixed. The bug for those unaware meant that if Raikou/Entei used Roar then they would permanently despawn from the game. This has thankfully been fixed in the Nintendo Switch version of the games.
The “Roaming Roar bug” in Pokemon FireRed & LeafGreen was fixed on Nintendo Switch

I forgot this bug existed, it’s great they fixed it.
Did they also fix the roamers having really low IVs?
I’m glad I already got them on shield version.