Kaguya indeed went to another dimension. MangaPanda translated it in a wrong way.
In MS's translation, Tobirama states: "I should go to the place where that huge chakra WAS coming from". He sensed her, but he stopped sensing Kaguya, as she went somewhere else.
After that, Hiruzen states: "But that huge chakra just disappeared", which further proves this point.
Most of you probably know, but there's people who are still thinking that place is on Earth.
In MS's translation, Tobirama states: "I should go to the place where that huge chakra WAS coming from". He sensed her, but he stopped sensing Kaguya, as she went somewhere else.
After that, Hiruzen states: "But that huge chakra just disappeared", which further proves this point.
Most of you probably know, but there's people who are still thinking that place is on Earth.